Family History Fanatics Thank You! I’m trying to learn as much as possible about my paternal grandfather. I’m pretty sure my dna test excluded the man we were told was my mother’s father. He’s Lebanese and judging by my results, and what I’ve been able to calculate on my own with the results, my grandfather is most likely 90-100% Ashkenazi Jewish. Then again, I’ve got the whole ⬆️ moron ⬆️ thing going on when it comes to this stuff so I could be way off.
@@FamilyHistoryFanatics I just want to know how related I am to a specific match and How in the one to one match does it tell if you match the kit or not without looking through a thousand matches,
Pam... I've found GEDmatch not to be the easiset place to start when analyzing DNA. Have you used Ancestry ThruLines (ruclips.net/video/f_70jgSlFcQ/видео.html) or MyHeritage Theory of Family Relativity (ruclips.net/video/mpub3RWsJ80/видео.html)? - Devon "The Debbie Downer of DNA" on FHF.
@@povertylevelphilanthropy1524 I just saw this today, so I hope you've made some progress in a year. My suggestion is, don't close any doors, don't assume Lebanese and Ashkenazi Jewish are incompatible.
Thank God I read these comments! It makes me feel a whole lot better! This video simply does not address what I need to know - simple for simples please!
Thanks for the feedback. GEDmatch and One-to-One tools are very challenging to understand, even when I have simplified the tool. Feel free to join me in a livestream on Friday to ask for more clarification. Or tell me where you get lost so I can resolve that information gap.
So I can figure this part out for myself. What I need to know is what does it mean? How do you tell if you're related through your father or your mother? How can you tell how distant a relative this person might be? How do you interpret the data, not how do you pull up the data?
Watch these follow-up videos. Then let me know if I have explained things better. 6 Questions to Better Understand GEDmatch One-to-One Tool ruclips.net/video/h8QPjYlSV2Q/видео.html Beginner's Guide to the GEDmatch One-to-One Tool | Genetic Genealogy ruclips.net/video/KNTBYRcjmyA/видео.html
@@michellem5600 TOTALLY AGREE .For many people its a total over load -- yet each step is not basic enough -- it might be fine for most-- but for many its real pity as many people cannot use this site ,
Tami. Right now, GEDmatch is not an easy tool for 'dummies.' My wife struggles using it and she's not a dummy. Stay tuned though, because with the purchase of GEDmatch by a company that wants to improve the user experience, it could become much easier. It just might take a year or so.
I'm finding that your videos show what the software does, but it's not really telling me WHAT IT MEANS. Do you have a video that explains what I'm seeing in the results and how to interpret it?
MichiganLatino- Thank you for putting in a nutshell exactly the same problem I was finding. I was asking myself why can't I understand this ? Thanks to you I realized that this guy is NOT explaining the results he is explaining how Gedmatch works !
@@FamilyHistoryFanatics - It's now Nov. 2021, have you a video that explains how to understand my results ? I have NO INTEREST in how Gedmatch gets its results for me ! I just want the results explained !
If you would send specific questions with examples of your confusion, to this link I can release a new video to answer this question. www.familyhistoryfanatics.com/contact
@@FamilyHistoryFanatics We can see colored line & why they are there. We're asking to understand how those lines can be translated into relationship information: ie: *this section indicates a parental match, siblings match, this section may indicate 1st cousin, or 5th cousin 2x removed, etc.
Additionally, I have a number of follow-up videos including the following: ruclips.net/video/KNTBYRcjmyA/видео.html ruclips.net/video/h8QPjYlSV2Q/видео.html
Watch these follow-up videos. Then let me know if I have explained things better. 6 Questions to Better Understand GEDmatch One-to-One Tool ruclips.net/video/h8QPjYlSV2Q/видео.html Beginner's Guide to the GEDmatch One-to-One Tool | Genetic Genealogy ruclips.net/video/KNTBYRcjmyA/видео.html
Thank you so much for posting these tutorials. One issue I haven't seen mentioned is color-blindness. 10 percent of males are colorblind, including me, I absolutely cannot see the difference between the red and green lines. No wonder I was so confused at first. I guess I'll have to rely more so on the numbers. I am new to this, and on first viewing, much goes over my head, but my understanding increases with each new video and "rewatch." Reading through comments and answers helps a lot, too, Thanks, again.
I had never thought about the color blind problem (not being color blind myself). I'll make a suggestion to GEDMatch about allowing people to alter colors.
I’m an Information Tech 32 years. I see why this is free. This is just messy, in order to get folks to go to the pay section… it should just be simple for others to understand. Seriously
Well I wasn't sure whether I had walked in on the wrong the talk but sticking it out to the end I really felt that I got something from it, certainly a better understanding of how it works. The penny is beginning to drop.
Yay! To continue learning,watch these follow-up videos. Then let me know if I have explained things better. 6 Questions to Better Understand GEDmatch One-to-One Tool ruclips.net/video/h8QPjYlSV2Q/видео.html Beginner's Guide to the GEDmatch One-to-One Tool | Genetic Genealogy ruclips.net/video/KNTBYRcjmyA/видео.html
Thanks so much for these helpful videos. I finally relented and uploaded to Gedmatch after not finding the answers I needed on 23andme or ancestry. I have consulted with numerous genealogist and no one can figure out my tree. I have to admit, I feeling overwhelmed on Gedmatch, but maybe I will finally find the answers. Where would I set my CM limit and other limits if I'm looking for birth parents and siblings? I wish you would do a video on how to find these individuals. You can use my info as a tough to find example! Thank you!
Have you watched my series about researching biosocial relatives? It starts with this video for a total of three. ruclips.net/video/aqD2q95Y4gY/видео.html While I know you want to know limits, I'm first concerned that you're putting the cart before the horse when trying to find birth parents and siblings.
I've watched all your video's and Devon's videos.. I'm still lost at how to figure out how I'm related to all those people that share my DNA. Talking about SNPs and CMs means nothing to me. :(
I would suggest taking a DNA workshop with myself in the future and/or with Your DNA Guide. It sounds like you might need some more hand holding instructions than what I can offer on YT. That's why those courses are available.
Thanks for the run-down on the interface. But now I want to learn what the values mean. For instance, what is a "Half Match"? I'm presuming it means that you only match on one side of your family. But a rundown of the next level would be good--is there a video for this?
A full match is when one a chromosome pair you share dna with your match for both your maternal and paternal lines. Your siblings, your children, and your grandchildren would fall into this category. For a half match, on the chromosome pair, you share DNA with your genetic match through either your maternal or paternal line, but not both.
All of these numbers are lovely, but is there a feature for those of us without degrees in genetics? I.e. a button that is going to tell me who my closest matches are and how they *might* be related? Putting in a one-to-one comparison is great - but without any indication as to what they might mean, they could be the formulation for glue for all I know!! :(
GEDmatch and genetic genealogy doesn't necessarily offer easy buttons. Have you watched my two follow-up videos on this topic? 6 Questions to Better Understand GEDmatch One-to-One Tool ruclips.net/video/h8QPjYlSV2Q/видео.html Beginner's Guide to the GEDmatch One-to-One Tool | Genetic Genealogy ruclips.net/video/KNTBYRcjmyA/видео.html
Me neither Celeste. I can play around and see what options do what, but what I have not as yet found is any videos which really explain what the steps for DNA analysis are and why to do it. There is a desparate need for examples, for video that begin from This is what you have and what you need to do, then explanations of how to do it. I'm keeping looking. Good luck
@@FamilyHistoryFanatics I think people are asking for "how do I interpret what the one-to-one is showing me". This video explains that clicking on 'graphics only' will limit the display to graphics only vs. text tables and that's fine. But if I have long blue bars 'significant' bars vs. short blue bars on a chromosome, what does that "mean" to me? What are "full match" vs "half match" base pairs, and what implication does that have as to the relationship of the 2 kits i.e. of the 2 people who want to know if/how they are related? Maybe those are addressed in other basic concepts videos but tying this specific tool to "how do you do dna-based genealogy" more than just at a mechanical/operational level of "set a lower snp threshold in order to lower your snp threshold" would be really helpful.
@@FamilyHistoryFanatics for instance, i only have one match that has anything in the X-DNA column. Also, that same person has 90.3 total Cm, which is over twice the next highest match. I have no idea if that is significant. I don't know this person. Is there a chart that tells us approximately what the different numbers might tell us?
Help please! I've watched the first video - how to join and upload my DNA profile. Which one comes next? Is there a list showing which order to watch them?
Which video is the starting place to understand DNA? Is there a series? Beyond knowing that if we have more matches, the closer we are to be related. Beyond that, I have no idea what any of this means. I'm not stupid by any means, but I need someone to start at the primitive basics.
I don't have one specific video but I've created a few playlists that might be helpful. Genetic Genealogy 101: Principles You Need to Know ruclips.net/p/PLcVx-GSCjcdnEg-YtkXA7Nj2YxxamaYKA Genetic Genealogy 201: The Basics of Building a Genetic Family Tree ruclips.net/p/PLcVx-GSCjcdmsw25mbI-wJin_9_9QQUzI I apologize that it's taken so long. My wife and I have full-time jobs other than this channel. Plus, we're learning as we go. I wish we would have thought of doing this sooner.
Read the first three chapters of Blain Bettingers book. To understand it, I had to read it out loud, take notes, almost word for word, but when I was done with the three chapters like that, I had so many aha moments to things I did not understand before. That is my best advice. Family History Fanatics are great, but you need the basics, Blaine makes it high school dna basic back in the 1970's to when it was first discovered. My class was the first class to be taught it and I did not understand it then. When reading Blaines book, I thought, Oh that is what THAT meant, my teacher could not dumb it down enough, Blaine Bettinger does in those three chapters. Then watch all these videos over and over with that behind you.
If you're a beginner. Start by using Ancestry ThruLines, not GEDmatch. GEDmatch is for more experienced genetic genealogists. ruclips.net/video/f_70jgSlFcQ/видео.html
I don't know how to understand the one to one match results. What does this means? Largest segment = 10.7 cM Total Half-Match segments (HIR) 27.7cM (0.773 Pct) Estimated number of generations to MRCA = 4.5 3 shared segments found for this comparison. 145404 SNPs used for this comparison. 52.142 Pct SNPs are full identical
I did that one as well... Largest segment = 4.6 cM Total segments = 16.6 cM (8.472 Pct) 4 shared segments found for this comparison. 9771 SNPs used for this comparison. Comparison took 0.018 seconds. CPU time used: 0.004 cpu seconds.
Hi, my question is when matching one testing site on myself to another testing site on myself, the one to one autosomal is identical to my match to my parents. Shouldn't it be higher since it's myself? Thanks!
I did a 1to 1 and the colour was mauve for 4 different kits managed by the same person. The cM was in the 30's and the SNPs were high and MRCA about 4.1. I see the table - for density. I assume the dark blue is the most dense and therefore a better match that if the bar was blue? Thanks
Not about this specific video but would appreciate all to have date they were added to utube. The various tools etc that you analyse do change. Would like to be alert so that don’t waste time on non-outdated
Watch more of our videos, I use spreadsheets throughout and even link to several templates that I use. We did a Channel Member video about Spreadsheets available here ruclips.net/video/_NGdkLTwZ_I/видео.html
Andy, Which companies use which build? As a novice, what I took away was that I should try clicking the prevent hard match box and try looking at complete shared match feature for some members of my family I will leave everything else at the default settings until I become more expert. Thanks for this video
I have tested with all of them and they're all in GEDmatch. With that luxury, I play with all of them. This is why my wife calls me a genealogy neard. As for the rest, you took away the right principles.
Are we related? Largest segment = 7.1 cM Total Half-Match segments (HIR) = 7.1 cM (0.199 Pct) Estimated number of generations to MRCA = 7.5 1 shared segments found for this comparison. 480168 SNPs used for this comparison. 69.613 Pct SNPs are full identical Comparison took 0.243 seconds. CPU time used: 0.042 cpu seconds.
I have compared mine and my mothers dna with the one to one matching. Can I use this to seperate my mothers from my fathers? My father has passed but I would like to delve deeper into the family genetics and relatives.
Yes. Check out a couple of tools: Parental Phasing: ruclips.net/video/G1eM3xloMKA/видео.html The One to Many Tool ruclips.net/video/ceYGv6RNfDE/видео.html Essentially, you'll want to figure out which matches match your mother. The matches that don't match her will likely match your father. That's if you parents aren't related within the past 5 generations.
I feel like you’re assuming a lot of us already have some level of understanding how this works. It’s like you have a Doctorate degree and I’m in pre-school ☹️
Hello Mr. Lee, Not sure if this is the exact venue for this, but I have a question about the One-to-One Autosomal DNA Comparison tool. It appears to have changed a bit since the last video you've done about it. SNP density has been added and I need to know what a low SNP density match does to the integrity of the match.
Try this video to better understand what a centimorgan is ruclips.net/video/5VmgHOhG6io/видео.html Also, try this brief post www.23andme.com/gen101/snps/
I don't understand how the one to one tool can show that a segment in the comparison I am doing fits with phased data (pruple) when I don't have either of my parents kits. Does it work it out somehow else?
I've just downloaded my DNA to the database and watched this video. Looking at the comments from previous people, I can tell that GedMatch isn't concerned about the comments. The website is quirky and isn't user friendly. The tools work fine, but the site was designed for scientists instead of Joe and Jane Consumer.
I am female and what to research my paternal grandfather, that I never knew. This would be my dad's father. How do I direct my search for persons in that line of the family? I am very interested in finding out information on that side. Thanks!
Take autosomal DNA tests with Ancestry. Transfer that to 23andMe, MyHeritage, and GEDmatch (Because you never know where your matches have tested, so be proactive and test everywhere.) Also have relatives that you know how you are related test as well. This will help you 'divide' your maternal matches from your paternal matches. It also helps when you are trying to see... if Match A matches you and your Dad, then they're likely related either from your paternal grandfather or paternal grandmother. If you can't test your Dad, that's okay. You can test your mother, your mother's siblings, cousins from that side of the family. This will help you rule out any match from that side and then you work with other DNA matches that aren't related to mother's side to find out (slowly) how those folks are related to you. With luck, you'll find 1st or 2nd cousins which would help a lot. Oh... and build your family tree and connect it with your DNA for what you do you. That will also help you separate out your DNA matches on some platforms.
I’m a bit confused. So if I were to have green in my graph, does that mean that we share a common ancestor? So if they were part German, for example, would that make me some part German as well?
Could you tell me what Pct stands for and what is means? if the pct is low or if the Pct is high? And what would you classify as low, average and high?
Is there a way on GEDmatch to find out whether the Italian percentage that I have in my DNA comes from my Dad or Mom side of the family, if yes, how? I do have a second cousin from my Mom side who also is on GEDmatch
I would look at your matches that you know of on your mom and your dad's side. If there is a lot of Italian among one set of matches, that is the side it is likely on. Otherwise, it is probably not possible.
Is there any Family History places that can help with dna, gedmatch, uploads, and working out who in my family is my father PAR. Plus do i need one of my children to test to work it out properly? thank you :)
You don't need your children if you have tested yourself. Instead, test your oldest living relatives and your cousins. As for people doing genetic genealogy research for you, reach out to www.legacytree.com/fhfanatics. They have experts to help you research your family tree using genetic genealogy.
what dose it mean when I get a gray line on the bottom of a match , on the graft ? largest seg. 66.3, estimated gen 2.8, 10 shared, 14553 snps. 53.21 full identical ?
Well, here I was, hoping that this GEDmatch would allow me to identify who I share my DNA with, and by what links. I am now faced with the results of my One-To Many analysis. Haven't a clue what most of it means. I tried a one-to-one test with the first match on the one-to-many list, and I am told that we have seven shared segments. There's also stuff about centimorgans, MRCA, etc. WTF does it all mean? Where do I go from here? Having looked at a couple of the videos hasn't helped. Now, looking at the comments made by many other people, it is clear I am not the only one who is baffled, so I get the feeling that there is no point in wading through any more videos. I had hoped that this this site was going to be really helpful, but now I'm not sure if its worth spending any more time on. Unless someone can point me at some sort of ground-up, systematic tutorial on this, then I'm out.
First, GEDmatch has struggled for several years to make the tools easier to understand. It's not geared toward the novice genetic genealogist due to it's huge learning curve. Second, I made this video in 2018 and have since released two follow up videos about the One-to-One tool. 6 Questions to Better Understand GEDmatch One-to-One Tool ruclips.net/video/h8QPjYlSV2Q/видео.html Beginner's Guide to the GEDmatch One-to-One Tool | Genetic Genealogy ruclips.net/video/KNTBYRcjmyA/видео.html You're not alone in feeling frustrated. I'm doing my best as a fan of the tools (I don't work for them) to help folks understand the website.
centimorgans tell you how closely related you are. mrca means 'most common recent ancestor' so that might be that you share the same 2nd great grandparents. so will add the generations: parent is 1, grandparent 2, great grandparent 3 and gr gr 4 so you might get a number like 4 which implies it's your 2nd great (its only an estimate - but it is pretty decent). gedmatch is the hardest site to use as a beginner the only way it gets easier is by spending more time there and learning about it in facebook groups and other sites like youtube
@@princessadora Just come across this. Thank you! Now I at least know what MRCA means. You say that Gedmatch is hard to use for a beginner. Are you able to advise on other sites which are easier? Thanks again.
@@melvinschofield5423 once you start learning gedmatch it starts looking easy, it just looks very confusing and complicated more than anything due to the layout. It’s the best site for what it offers.
Each company (Ancestry, MyHeritage, 23andMe, etc) have a group of kits that everyone else is compared to to determine what the ethnicity/admixture results are.
What is the significance of which chromosome you match on with another dna match? In order to break through a brick wall segment about 3 generations back...
It is only significant if you have 3 or more people who all share the same segment. This indicates that they are all related through the same common ancestor.
OK, I seem to have jumped into deep water before learning to swim. So, please point me to a curriculum of videos, starting with DNA 101 which will prepare me for this video eventually. Thanks.
GEDmatch is for intermediate and advanced genetic genealogy users. I have a series of videos for the more beginner genetic genealogist. ruclips.net/p/PLcVx-GSCjcdmsw25mbI-wJin_9_9QQUzI But also, make sure you have covered the basics of genealogy research as well. You need to do both to build a family tree with DNA evidence. ruclips.net/video/Fx2Tff-R-yI/видео.html
Hi Andy. I'm just wondering if the top chromosome is entirely Yellow with thin green lines and the bottom is Blue does that confirm its definitely a parent?
Hello. Thank you for a great video. I have been working with someone whom I expected to be a very distant cousin (shared foreparents born circa 1790; my 3x gt grandparents). We have the paper trail, which we have worked on over several years. There was no match on the standard settings. I then fiddled the Minimum Segment Threshold Size to 100 and the Minimum Segment to 4.0. This returned a largest segment of 4.6cM, with total half-match segments of 13.1cM (0.356%). Is this the sort of match you would expect at that distance or is it too faint to count? Would we be blending into the background population DNA for the NW of England?
The problem with this is that because the segments are so small (and the SNPs are small), you don't know whether the segments are from descent (confirming the paper trail relationship) or by chance (neither confirming nor denying the paper trail relationship). As a test of this, I compared myself (primarily English origin) to my sister in law (Mexican - mix of spanish, native american, and African). Using your parameters, the largest segment we share is 4.4 cM and a total of 21.3 cM. I tried with several other unrelated people, and had the same result. You could get the same results with almost any 2 random people. At these small of segment size, 90%+ are by random chance.
Can you tell by the number of cM and segments if the fathers of two stepsisters are related? And is there a tool on Gedmatch Genesis to this out? Much appreciate your reply. Thanks.
Doubt here: lowing your SNPs at Size Mismatching (but not the cM) makes your "new" segments less plausible? Because (of course) I'm getting more segments as it seems...
Full sibling: you will have fully identical regions and share between 2000 and 3000 cM Half sibling: you will have no fully identical regions and share between 1300 and 2100 cM
What does it mean if are NOT a match at 7 CMs; but, if you change the default to three (3) CMs, you ARE a match. Can you definitively say the two kits ARE a DNA match? What does it mean?
No, you can't say you are a match..... but you still may be related. For example, my wife and I show no matches at 7, but 18 cM match at 3. 18 cM would indicate perhaps 4th cousins. However, our genealogy indicates that although we are related several different ways, the closest relationship is 7th cousins. So the 18 value is the result of false matches. Autosomal DNA comparison is very useful for close relationships, but beyond about 4 generations, is not very useful.
@@charleshoffpauir3752 Thanks for taking the time to reply to me and 'splain it. Therein lies my challenge in trying to find the fathers of my 3rd great grandfather which would be six (generations) from me. rats!
MY IQ is really high, so I understand even the most challenging scientific info fairly well. But, huh...I think the problem is you are TOO familiar with your topic - you don't know how very, very much you know. It makes it harder for you to explain things because you seem to be starting your explanations at college level - and most of us are just at first grade. I am still trying to figure out what the effing colors mean!!! SO: please show us KINDERGARTEN ultra beginners level and move on up. Otherwise, your style is wonderful and you are very personable. Don't change a thing in that regard!!
Amen Alex....I'm no dope and have among other things a Master of Science degree. But this series of videos should be labelled "For Professional level Genealogists Only". This is WAY too technical for 99% of the people who want the Cliff's notes version.
I agree with these guys, why is this so complicated. We got colors, we got tons of stuff on the dashboard, I got nothing!!!!!! All I want to do is find out who I am related to, jesus !!!!!
I took your feedback into account. Watch these follow-up videos. Then let me know if I have explained things better. 6 Questions to Better Understand GEDmatch One-to-One Tool ruclips.net/video/h8QPjYlSV2Q/видео.html Beginner's Guide to the GEDmatch One-to-One Tool | Genetic Genealogy ruclips.net/video/KNTBYRcjmyA/видео.html
Hello, thank you so much for your great videos! I tried what you said and it's very strange because the kit that gedmatch said I'm closest to, when I put it in the one on one match it says the kit can't be found. How did it find it to give me the kit number, but then can't do a one on one comparison?
Hi Barbara Biggs, I don't know for definite, but is it possible that the person who originally submitted their DNA sample has since deleted it from Gedmatch?
I have done a lot of genealogy and I have my Dna from ancestry on Gedmatch. I have a brick wall with my Shelton family and I have used the Gedmatch ids from wiki tree on the lines I feel are most likely to be mine and I have a match and it says CHR18 B37 start position B 37 end position Centimorgan 11.1 Snps 233. This match didn't provide a gedcom and I haven't been able to contact them so what can I gather from this matching to go forward and try to find the our connection another way?
A cM value of 11 would, on average, represent a kinship of 4th cousins. However there is considerable variability around these values, especially for distant relationships. (4th cousins would indicate a common ancestor of about Great-great-great grandparents)
Yes. If you have a valid match of more than 7 shared centimorgans (cMs), then you will likely need to research around this match using other methods. Make sure you have created a Leeds Method chart (if they share more than 40 cMs). If not, use the clustering tool for matches with lower cMs ruclips.net/video/lTboZ5q10Nk/видео.html. If you see how your other shared matches relate to that shared match, you might be able to figure this out.
Question. If you lower snp to 25 and 3 cms would all the matches be false? I'm in a group that provides us with ancient kits. I want to believe the match is real but I find I match almost all the ancient kits provided from aall over the world.
All is a superlative, so I try to not use them. In this case, 25/3 would also include all of the matches that were at the default 200-400/7 of which we know half are real. So no all of the matches would't be false. Statistically however, probably 99% of the matches would be so you would be hard pressed to find those real matches.
in Ancestry, click on "DNA", then click on the top-most choice, your summary, then click on "settings" on the right, then go down and find "download my stuff" or similar. This is the file you upload to gedmatch.
I agree. My problem is that anybody related to me has never heard of Gedmatch and has not uploaded their raw data, so I cannot get a match. Should I ask them to let me have their raw data and upload it myself?
@@davidcrompton8896 I just have myself on gedmatch, and recently, I have been asked by several persons if my husband was on gedmatch or if I could put him on because of his BOITNOTT line. People are researching it and are coming up matching with him. His g grandmother was a Boitnott, and I have the line back to 1814. His line is long lived except for his g grandfather who died young. They all lived into their 90's, so they went back pretty far easily. I put him on gedmatch.
was means this with my broter? Largest segment = 151.5 cM Total Half-Match segments (HIR) = 3542.5 cM (98.835 Pct) Estimated number of generations to MRCA = 1.0 50 shared segments found for this comparison. 152479 SNPs used for this comparison. 99.994 Pct SNPs are full identical
I'm trying to get to One-to-One, through a specific connection. So, if I go to "One-to-Many" and find a match I click on, which puts that person in the box above, then click search, it shows many matches that are not in my matches, unless I just can't find them and need to SEARCH every single name using the find feature in my browser. Is there a way to do a one to one with their matches through beta? Do I just follow the steps here, and add my test kit number for original, each time, or is there an easier way?
This video doesn't explain those Try this video to better understand what a centimorgan is ruclips.net/video/5VmgHOhG6io/видео.html Also, try this brief post www.23andme.com/gen101/snps/
Maybe I am not understanding it all. I am an adult adoptee trying to find birth relatives. on the 1 to many charting the Gen column has me a bit confused. Can you explain the numbering a little more? On my chart the highest matches range from a 2.9 to 4.3. How distant are they from me? thank you in advance
I know I am late to the party but hoping you can answer my question. The comparison also computes the MRCA. If the result is 2 how do we know which kit to apply this to? I am comparing 2 kits where I assume they are niece and aunt (actually half relationship) but it could be a 2 generation difference. Is the 2 applied to the niece and I am correct that the grandfather is the common ancestor or is it applied to the aunt and the great-grandfather is the common ancestor?
A full match is when one a chromosome pair you share dna with your match for both your maternal and paternal lines. Your siblings, your children, and your grandchildren would fall into this category. For a half match, on the chromosome pair, you share DNA with your genetic match through either your maternal or paternal line, but not both.
If someone is 2.5 ? I know you said 1.0 would be a parent.:. I’m just wondering is it a cousin or half sibling? We match on a lot of cro but I don’t know how to read them
I was hoping he'd go over the info in the bottom. like this - Total Half-Match segments (HIR) = 104.2 cM (2.905 Pct) Estimated number of generations to MRCA = 3.6 what does the number of generations to MRCA mean?!
@@FamilyHistoryFanatics I would like to take this conversation a little farther. I'd like to understand how the summary information allows us to judge the quality of the comparison, For example I have a result... Largest segment = 19.2 cM Total Half-Match segments (HIR) = 19.2 cM (0.535 Pct) Estimated number of generations to MRCA = 4.8 1 shared segments found for this comparison. 290637 SNPs used for this comparison. 52.824 Pct SNPs are full identical I understand the Largest Segment and the MRCA, but I'm a little unclear on the Half-Match segments especially when the last line talks about 52.824 Pct SNPs are full Identical. what does the number within the () represent? and how does it relate to the Full Identical pct on the bottom line. Also have no idea of what the figure 290637 SNPs used for this comparison. Is it the number of SNPs within the segment where the match is? Could you also explain and put into context the Half Match and Full Identical figures ? Sorry for all the questions, but I thought this video was very good at explaining on how to use the tool, It might make sense, unless it's already been done and I haven't discovered it yet, to have a video just on interpreting this info and explaining how it helps one to understand the quality of the comparison and to compare it to another similar comparison. Thanks for the videos, they do a great job explaining this complex topic.
Q:- Forgetting the chromosomes I look at the five lines of data at the very bottom of the natch data as I can have a low cM but Total Half-Match segments (HIR) or high % & / or shared segments. How much faith can we put in that data?
When I look at the graphics all the colors are somewhat “grayed out”, not clear like what is shown here. Would that be a problem at MY end? The only device I have is an iPad-do I need an actual computer/laptop to make the most out of the tools?
![Coheed and Cambria - Searching for Tomorrow [Official Video]](http://i.ytimg.com/vi/hDsYGLbmadg/mqdefault.jpg)
⏭ Watch Next How to use the One to Many Tool on GEDmatch 👉🏼 ruclips.net/video/DbGF7bdouE0/видео.html
Do you offer a “for morons” edition? If so, where does one sign up for said version?
Keep watching, we try to cater to all levels so some videos are easier to understand than others.
Family History Fanatics Thank You! I’m trying to learn as much as possible about my paternal grandfather. I’m pretty sure my dna test excluded the man we were told was my mother’s father. He’s Lebanese and judging by my results, and what I’ve been able to calculate on my own with the results, my grandfather is most likely 90-100% Ashkenazi Jewish. Then again, I’ve got the whole ⬆️ moron ⬆️ thing going on when it comes to this stuff so I could be way off.
@@FamilyHistoryFanatics I just want to know how related I am to a specific match and How in the one to one match does it tell if you match the kit or not without looking through a thousand matches,
Pam... I've found GEDmatch not to be the easiset place to start when analyzing DNA. Have you used Ancestry ThruLines (ruclips.net/video/f_70jgSlFcQ/видео.html) or MyHeritage Theory of Family Relativity (ruclips.net/video/mpub3RWsJ80/видео.html)? - Devon "The Debbie Downer of DNA" on FHF.
@@povertylevelphilanthropy1524 I just saw this today, so I hope you've made some progress in a year. My suggestion is, don't close any doors, don't assume Lebanese and Ashkenazi Jewish are incompatible.
Thank God I read these comments! It makes me feel a whole lot better! This video simply does not address what I need to know - simple for simples please!
Thanks for the feedback. GEDmatch and One-to-One tools are very challenging to understand, even when I have simplified the tool. Feel free to join me in a livestream on Friday to ask for more clarification.
Or tell me where you get lost so I can resolve that information gap.
I agree Christine
Ditto! Wish there was a “GEDmatch” for Dummies. Honestly.
@@FamilyHistoryFanatics Guess I missed that. Is it available now by any chance?
Just WOW! No Idea if I even know anything now. Friendly advice, you need to make this much simpler. Or maybe it's me? I was lost.....
I'll see about making a simpler video to explain it better.
So I can figure this part out for myself. What I need to know is what does it mean? How do you tell if you're related through your father or your mother? How can you tell how distant a relative this person might be? How do you interpret the data, not how do you pull up the data?
This does not address the very basics ie what do snp's etc represent?
Watch these follow-up videos. Then let me know if I have explained things better.
6 Questions to Better Understand GEDmatch One-to-One Tool ruclips.net/video/h8QPjYlSV2Q/видео.html
Beginner's Guide to the GEDmatch One-to-One Tool | Genetic Genealogy ruclips.net/video/KNTBYRcjmyA/видео.html
@@michellem5600 TOTALLY AGREE .For many people its a total over load -- yet each step is not basic enough -- it might be fine for most-- but for many its real pity as many people cannot use this site ,
@@FamilyHistoryFanatics z
@@FamilyHistoryFanatics eq
is there a for dummies version? good lord you lost me 2 minutes in
Tami. Right now, GEDmatch is not an easy tool for 'dummies.' My wife struggles using it and she's not a dummy. Stay tuned though, because with the purchase of GEDmatch by a company that wants to improve the user experience, it could become much easier. It just might take a year or so.
me, too
Me too!!!
It’s crazy you pay for it but cannot use it
I'm finding that your videos show what the software does, but it's not really telling me WHAT IT MEANS. Do you have a video that explains what I'm seeing in the results and how to interpret it?
MichiganLatino- Thank you for putting in a nutshell exactly the same problem I was finding. I was asking myself why can't I understand this ? Thanks to you I realized that this guy is NOT explaining the results he is explaining how Gedmatch works !
@@FamilyHistoryFanatics - It's now Nov. 2021, have you a video that explains how to understand my results ? I have NO INTEREST in how Gedmatch gets its results for me ! I just want the results explained !
If you would send specific questions with examples of your confusion, to this link I can release a new video to answer this question. www.familyhistoryfanatics.com/contact
@@FamilyHistoryFanatics We can see colored line & why they are there. We're asking to understand how those lines can be translated into relationship information: ie: *this section indicates a parental match, siblings match, this section may indicate 1st cousin, or 5th cousin 2x removed, etc.
Additionally, I have a number of follow-up videos including the following:
ruclips.net/video/KNTBYRcjmyA/видео.html ruclips.net/video/h8QPjYlSV2Q/видео.html
Great information if I had the slightest clue of what it means regarding establishing relationships.
How are you kin??
Watch these follow-up videos. Then let me know if I have explained things better.
6 Questions to Better Understand GEDmatch One-to-One Tool ruclips.net/video/h8QPjYlSV2Q/видео.html
Beginner's Guide to the GEDmatch One-to-One Tool | Genetic Genealogy ruclips.net/video/KNTBYRcjmyA/видео.html
Thank you so much for posting these tutorials. One issue I haven't seen mentioned is color-blindness. 10 percent of males are colorblind, including me, I absolutely cannot see the difference between the red and green lines. No wonder I was so confused at first. I guess I'll have to rely more so on the numbers.
I am new to this, and on first viewing, much goes over my head, but my understanding increases with each new video and "rewatch." Reading through comments and answers helps a lot, too, Thanks, again.
I had never thought about the color blind problem (not being color blind myself). I'll make a suggestion to GEDMatch about allowing people to alter colors.
I’m an Information Tech 32 years. I see why this is free. This is just messy, in order to get folks to go to the pay section… it should just be simple for others to understand. Seriously
thank you for this video...I have been at this for 4.5 years now and thought your explanation was easy to understand compared to other’s I have seen.
I'm happy to hear that. I know this video serves some people more than others. Glad to hear positive feedback.
Well I wasn't sure whether I had walked in on the wrong the talk but sticking it out to the end I really felt that I got something from it, certainly a better understanding of how it works. The penny is beginning to drop.
Yay!
To continue learning,watch these follow-up videos. Then let me know if I have explained things better.
6 Questions to Better Understand GEDmatch One-to-One Tool ruclips.net/video/h8QPjYlSV2Q/видео.html
Beginner's Guide to the GEDmatch One-to-One Tool | Genetic Genealogy ruclips.net/video/KNTBYRcjmyA/видео.html
Very helpful. I finally know what FIR is and how to apply it.👍🏻
Yay! Happy to help.
Thanks so much for these helpful videos. I finally relented and uploaded to Gedmatch after not finding the answers I needed on 23andme or ancestry. I have consulted with numerous genealogist and no one can figure out my tree. I have to admit, I feeling overwhelmed on Gedmatch, but maybe I will finally find the answers. Where would I set my CM limit and other limits if I'm looking for birth parents and siblings? I wish you would do a video on how to find these individuals. You can use my info as a tough to find example! Thank you!
Have you watched my series about researching biosocial relatives? It starts with this video for a total of three. ruclips.net/video/aqD2q95Y4gY/видео.html
While I know you want to know limits, I'm first concerned that you're putting the cart before the horse when trying to find birth parents and siblings.
I've watched all your video's and Devon's videos.. I'm still lost at how to figure out how I'm related to all those people that share my DNA. Talking about SNPs and CMs means nothing to me. :(
Sandy Hessel- You are NOT alone. This guy does NOT explain your results, he explains HOW Gedmatch got your results !
Yes. I explain how to use the tools. SLS. I also have other videos about DNA research.
I would suggest taking a DNA workshop with myself in the future and/or with Your DNA Guide. It sounds like you might need some more hand holding instructions than what I can offer on YT. That's why those courses are available.
@@FamilyHistoryFanatics - Sorry if the truth hurt.
Thanks for the run-down on the interface. But now I want to learn what the values mean. For instance, what is a "Half Match"? I'm presuming it means that you only match on one side of your family. But a rundown of the next level would be good--is there a video for this?
A full match is when one a chromosome pair you share dna with your match for both your maternal and paternal lines. Your siblings, your children, and your grandchildren would fall into this category. For a half match, on the chromosome pair, you share DNA with your genetic match through either your maternal or paternal line, but not both.
I just want to know what the color bars mean in terms of relationship
All of these numbers are lovely, but is there a feature for those of us without degrees in genetics? I.e. a button that is going to tell me who my closest matches are and how they *might* be related? Putting in a one-to-one comparison is great - but without any indication as to what they might mean, they could be the formulation for glue for all I know!! :(
GEDmatch and genetic genealogy doesn't necessarily offer easy buttons. Have you watched my two follow-up videos on this topic?
6 Questions to Better Understand GEDmatch One-to-One Tool ruclips.net/video/h8QPjYlSV2Q/видео.html
Beginner's Guide to the GEDmatch One-to-One Tool | Genetic Genealogy ruclips.net/video/KNTBYRcjmyA/видео.html
i don't understand anything. I mean.. ok with the explanation, but what it means?
Me neither Celeste. I can play around and see what options do what, but what I have not as yet found is any videos which really explain what the steps for DNA analysis are and why to do it. There is a desparate need for examples, for video that begin from This is what you have and what you need to do, then explanations of how to do it. I'm keeping looking. Good luck
What questions are you trying to answer? That's the first step.
Yeah I don't get it. In Biology I did like calculating X and Y etc but that was 9th grade..lol I don't even know how to do it now. I'm so lost. 😬
@@FamilyHistoryFanatics I think people are asking for "how do I interpret what the one-to-one is showing me". This video explains that clicking on 'graphics only' will limit the display to graphics only vs. text tables and that's fine. But if I have long blue bars 'significant' bars vs. short blue bars on a chromosome, what does that "mean" to me? What are "full match" vs "half match" base pairs, and what implication does that have as to the relationship of the 2 kits i.e. of the 2 people who want to know if/how they are related? Maybe those are addressed in other basic concepts videos but tying this specific tool to "how do you do dna-based genealogy" more than just at a mechanical/operational level of "set a lower snp threshold in order to lower your snp threshold" would be really helpful.
@@FamilyHistoryFanatics for instance, i only have one match that has anything in the X-DNA column. Also, that same person has 90.3 total Cm, which is over twice the next highest match. I have no idea if that is significant. I don't know this person. Is there a chart that tells us approximately what the different numbers might tell us?
Help please! I've watched the first video - how to join and upload my DNA profile. Which one comes next? Is there a list showing which order to watch them?
Yep. I made this video at the beginning of 2021 ruclips.net/video/wCnvbh-BziQ/видео.html
I agree with the Alex Jones; there should be an intro course on this, I've had to just learn as I go, no one really explains in detail...
There are lots of resources on the internet. I teach an intro course every other year or so in Nov-Dec.
@@FamilyHistoryFanatics gedmatch is much user friendly lately, I love the ability to search on a single area of a chromosome.
Which video is the starting place to understand DNA? Is there a series? Beyond knowing that if we have more matches, the closer we are to be related. Beyond that, I have no idea what any of this means. I'm not stupid by any means, but I need someone to start at the primitive basics.
I don't have one specific video but I've created a few playlists that might be helpful.
Genetic Genealogy 101: Principles You Need to Know ruclips.net/p/PLcVx-GSCjcdnEg-YtkXA7Nj2YxxamaYKA
Genetic Genealogy 201: The Basics of Building a Genetic Family Tree ruclips.net/p/PLcVx-GSCjcdmsw25mbI-wJin_9_9QQUzI
I apologize that it's taken so long. My wife and I have full-time jobs other than this channel. Plus, we're learning as we go. I wish we would have thought of doing this sooner.
Read the first three chapters of Blain Bettingers book. To understand it, I had to read it out loud, take notes, almost word for word, but when I was done with the three chapters like that, I had so many aha moments to things I did not understand before. That is my best advice. Family History Fanatics are great, but you need the basics, Blaine makes it high school dna basic back in the 1970's to when it was first discovered. My class was the first class to be taught it and I did not understand it then. When reading Blaines book, I thought, Oh that is what THAT meant, my teacher could not dumb it down enough, Blaine Bettinger does in those three chapters. Then watch all these videos over and over with that behind you.
can you help me understand all this n lay terms....trying to find family roots
If you're a beginner. Start by using Ancestry ThruLines, not GEDmatch. GEDmatch is for more experienced genetic genealogists. ruclips.net/video/f_70jgSlFcQ/видео.html
I don't know how to understand the one to one match results. What does this means?
Largest segment = 10.7 cM
Total Half-Match segments (HIR) 27.7cM (0.773 Pct) Estimated number of generations to MRCA = 4.5
3 shared segments found for this comparison. 145404 SNPs used for this comparison. 52.142 Pct SNPs are full identical
I did that one as well...
Largest segment = 4.6 cM
Total segments = 16.6 cM (8.472 Pct)
4 shared segments found for this comparison.
9771 SNPs used for this comparison.
Comparison took 0.018 seconds.
CPU time used: 0.004 cpu seconds.
Thanks for sharing
Can I bring up just the names and emails of common matches when comparing two separate kits?
Great info for beginners,
Glad you think so!
Hi, my question is when matching one testing site on myself to another testing site on myself, the one to one autosomal is identical to my match to my parents. Shouldn't it be higher since it's myself? Thanks!
I did a 1to 1 and the colour was mauve for 4 different kits managed by the same person. The cM was in the 30's and the SNPs were high and MRCA about 4.1. I see the table - for density. I assume the dark blue is the most dense and therefore a better match that if the bar was blue? Thanks
Not about this specific video but would appreciate all to have date they were added to utube. The various tools etc that you analyse do change. Would like to be alert so that don’t waste time on non-outdated
Each video does have a date added to RUclips on them.
You mentioned using a spreadsheet for comparing data. Please provide a tutorial on how to set it up and obtain meaningful results.
Watch more of our videos, I use spreadsheets throughout and even link to several templates that I use.
We did a Channel Member video about Spreadsheets available here ruclips.net/video/_NGdkLTwZ_I/видео.html
Andy, Which companies use which build?
As a novice, what I took away was that I should try clicking the prevent hard match box and try looking at complete shared match feature for some members of my family
I will leave everything else at the default settings until I become more expert.
Thanks for this video
I have tested with all of them and they're all in GEDmatch. With that luxury, I play with all of them. This is why my wife calls me a genealogy neard.
As for the rest, you took away the right principles.
Are we related?
Largest segment = 7.1 cM
Total Half-Match segments (HIR) = 7.1 cM (0.199 Pct)
Estimated number of generations to MRCA = 7.5
1 shared segments found for this comparison.
480168 SNPs used for this comparison.
69.613 Pct SNPs are full identical
Comparison took 0.243 seconds.
CPU time used: 0.042 cpu seconds.
I understood this perfectly. Thank you!
Glad it helped!
I have compared mine and my mothers dna with the one to one matching. Can I use this to seperate my mothers from my fathers? My father has passed but I would like to delve deeper into the family genetics and relatives.
Yes. Check out a couple of tools:
Parental Phasing: ruclips.net/video/G1eM3xloMKA/видео.html
The One to Many Tool ruclips.net/video/ceYGv6RNfDE/видео.html
Essentially, you'll want to figure out which matches match your mother. The matches that don't match her will likely match your father. That's if you parents aren't related within the past 5 generations.
Does the number of shared segments indicate how closely someone is related to me?
How do I figure out genetic distance?
Do you monitor this video frequently? I have TONS of questions!!
I feel like you’re assuming a lot of us already have some level of understanding how this works. It’s like you have a Doctorate degree and I’m in pre-school ☹️
Ask away your questions. If it makes you feel better, I only have a BS in Mechanical Engineering.
ALSO... If you don't get a response quickly, send an email to info familyhistoryfanatics dot com.
when I do a 1:1 comparison of my kit vs my kit, I have quite a few places that don't match. What's up with that?
I don't know, glitch in the system.
My question to you is: at the bottom, if it says "no DNA segments found" does that mean we are not related in any way??
Not necessarily, just that you don't share any DNA.
You had me at Centimorgan.
Aww?
Hello Mr. Lee, Not sure if this is the exact venue for this, but I have a question about the One-to-One Autosomal DNA Comparison tool. It appears to have changed a bit since the last video you've done about it. SNP density has been added and I need to know what a low SNP density match does to the integrity of the match.
My wife can relate.
This vid has lost me because I don't understand chromosomes, SNPS, etc etc. Which vid should I watch to help me with this?
Then tell me why this would be useful?
Try this video to better understand what a centimorgan is ruclips.net/video/5VmgHOhG6io/видео.html
Also, try this brief post www.23andme.com/gen101/snps/
I was hoping you would explain the analysis at the bottom of the page.
I don't understand how the one to one tool can show that a segment in the comparison I am doing fits with phased data (pruple) when I don't have either of my parents kits. Does it work it out somehow else?
I've just downloaded my DNA to the database and watched this video. Looking at the comments from previous people, I can tell that GedMatch isn't concerned about the comments. The website is quirky and isn't user friendly. The tools work fine, but the site was designed for scientists instead of Joe and Jane Consumer.
First, I don't work for GEDmatch, I'm just a guy who uses the tool. GEDmatch does care about it's consumers and works to improve the tools.
I am female and what to research my paternal grandfather, that I never knew. This would be my dad's father. How do I direct my search for persons in that line of the family? I am very interested in finding out information on that side. Thanks!
Take autosomal DNA tests with Ancestry. Transfer that to 23andMe, MyHeritage, and GEDmatch (Because you never know where your matches have tested, so be proactive and test everywhere.)
Also have relatives that you know how you are related test as well. This will help you 'divide' your maternal matches from your paternal matches. It also helps when you are trying to see... if Match A matches you and your Dad, then they're likely related either from your paternal grandfather or paternal grandmother. If you can't test your Dad, that's okay. You can test your mother, your mother's siblings, cousins from that side of the family. This will help you rule out any match from that side and then you work with other DNA matches that aren't related to mother's side to find out (slowly) how those folks are related to you. With luck, you'll find 1st or 2nd cousins which would help a lot.
Oh... and build your family tree and connect it with your DNA for what you do you. That will also help you separate out your DNA matches on some platforms.
I’m a bit confused. So if I were to have green in my graph, does that mean that we share a common ancestor? So if they were part German, for example, would that make me some part German as well?
You are a genius.
Can you tell my wife this?
its like learning a new language
When running a One to One on Gedmatch, the results were all shown as Phased matches. How do I interpre this?
Could you tell me what Pct stands for and what is means? if the pct is low or if the Pct is high? And what would you classify as low, average and high?
Percent. In this case, we are looking at how many of the SNPs are fully identical. 50% or more is typical. 80% can be seen for close relatives.
I have to upload my mutations which are on a pamphlet so how do you upload that? Or do you just type it in? I must be overlooking that
You have to upload a raw file kit that was downloaded from the testing site. It has about 600,000 lines of code.
Is there a way on GEDmatch to find out whether the Italian percentage that I have in my DNA comes from my Dad or Mom side of the family, if yes, how? I do have a second cousin from my Mom side who also is on GEDmatch
I would look at your matches that you know of on your mom and your dad's side. If there is a lot of Italian among one set of matches, that is the side it is likely on. Otherwise, it is probably not possible.
Is there any Family History places that can help with dna, gedmatch, uploads, and working out who in my family is my father PAR. Plus do i need one of my children to test to work it out properly? thank you :)
You don't need your children if you have tested yourself. Instead, test your oldest living relatives and your cousins.
As for people doing genetic genealogy research for you, reach out to www.legacytree.com/fhfanatics. They have experts to help you research your family tree using genetic genealogy.
what dose it mean when I get a gray line on the bottom of a match , on the graft ? largest seg. 66.3, estimated gen 2.8, 10 shared, 14553 snps. 53.21 full identical ?
I get it. I need to watch more vids. Then I'll get it. I think.
Yes, watch more videos, but also ask questions. That's an integral part of learning. And Andy does his best to respond soon.
Well, here I was, hoping that this GEDmatch would allow me to identify who I share my DNA with, and by what links. I am now faced with the results of my One-To Many analysis. Haven't a clue what most of it means. I tried a one-to-one test with the first match on the one-to-many list, and I am told that we have seven shared segments. There's also stuff about centimorgans, MRCA, etc. WTF does it all mean? Where do I go from here? Having looked at a couple of the videos hasn't helped. Now, looking at the comments made by many other people, it is clear I am not the only one who is baffled, so I get the feeling that there is no point in wading through any more videos. I had hoped that this this site was going to be really helpful, but now I'm not sure if its worth spending any more time on. Unless someone can point me at some sort of ground-up, systematic tutorial on this, then I'm out.
First, GEDmatch has struggled for several years to make the tools easier to understand. It's not geared toward the novice genetic genealogist due to it's huge learning curve.
Second, I made this video in 2018 and have since released two follow up videos about the One-to-One tool.
6 Questions to Better Understand GEDmatch One-to-One Tool ruclips.net/video/h8QPjYlSV2Q/видео.html
Beginner's Guide to the GEDmatch One-to-One Tool | Genetic Genealogy ruclips.net/video/KNTBYRcjmyA/видео.html
You're not alone in feeling frustrated. I'm doing my best as a fan of the tools (I don't work for them) to help folks understand the website.
centimorgans tell you how closely related you are. mrca means 'most common recent ancestor' so that might be that you share the same 2nd great grandparents. so will add the generations: parent is 1, grandparent 2, great grandparent 3 and gr gr 4 so you might get a number like 4 which implies it's your 2nd great (its only an estimate - but it is pretty decent). gedmatch is the hardest site to use as a beginner the only way it gets easier is by spending more time there and learning about it in facebook groups and other sites like youtube
@@princessadora Just come across this. Thank you! Now I at least know what MRCA means. You say that Gedmatch is hard to use for a beginner. Are you able to advise on other sites which are easier? Thanks again.
@@melvinschofield5423 once you start learning gedmatch it starts looking easy, it just looks very confusing and complicated more than anything due to the layout. It’s the best site for what it offers.
@@princessadora OK thanks. Perhaps I will have another go and persevere!
What do you mean they use a different reference set for determining what the numbers are?
Each company (Ancestry, MyHeritage, 23andMe, etc) have a group of kits that everyone else is compared to to determine what the ethnicity/admixture results are.
What is the significance of which chromosome you match on with another dna match? In order to break through a brick wall segment about 3 generations back...
It is only significant if you have 3 or more people who all share the same segment. This indicates that they are all related through the same common ancestor.
would comparing your own 2 kits on the x look the same as 2 paternal half sisters?.
Yes, because the X would show half identical across the entire chromosome.
Could you explain what a “snip” is?
SNP - single nucleotide polymorphism, it is a specific location on your DNA where a mutation may have occurred (i.e. the letter changed from A to C)
OK, I seem to have jumped into deep water before learning to swim. So, please point me to a curriculum of videos, starting with DNA 101 which will prepare me for this video eventually. Thanks.
GEDmatch is for intermediate and advanced genetic genealogy users. I have a series of videos for the more beginner genetic genealogist. ruclips.net/p/PLcVx-GSCjcdmsw25mbI-wJin_9_9QQUzI
But also, make sure you have covered the basics of genealogy research as well. You need to do both to build a family tree with DNA evidence. ruclips.net/video/Fx2Tff-R-yI/видео.html
Where do you go to see how and who you are related?
I have a better video for you to start with coming out soon ruclips.net/video/q1zYhOMBe-U/видео.html
Why there are no results for mtDNA and Y chromosome haplotypes? Could you add these features? TIA
Gedmatch doesn't provide this information. You get that from either 23andMe or Family Tree DNA.
Hi Andy. I'm just wondering if the top chromosome is entirely Yellow with thin green lines and the bottom is Blue does that confirm its definitely a parent?
All chromosomes should have blue across the length of them to be a parent.
Great help!
Glad you thought so.
Hello. Thank you for a great video.
I have been working with someone whom I expected to be a very distant cousin (shared foreparents born circa 1790; my 3x gt grandparents). We have the paper trail, which we have worked on over several years.
There was no match on the standard settings. I then fiddled the Minimum Segment Threshold Size to 100 and the Minimum Segment to 4.0. This returned a largest segment of 4.6cM, with total half-match segments of 13.1cM (0.356%).
Is this the sort of match you would expect at that distance or is it too faint to count? Would we be blending into the background population DNA for the NW of England?
The problem with this is that because the segments are so small (and the SNPs are small), you don't know whether the segments are from descent (confirming the paper trail relationship) or by chance (neither confirming nor denying the paper trail relationship).
As a test of this, I compared myself (primarily English origin) to my sister in law (Mexican - mix of spanish, native american, and African). Using your parameters, the largest segment we share is 4.4 cM and a total of 21.3 cM. I tried with several other unrelated people, and had the same result. You could get the same results with almost any 2 random people. At these small of segment size, 90%+ are by random chance.
Can you tell by the number of cM and segments if the fathers of two stepsisters are related? And is there a tool on Gedmatch Genesis to this out? Much appreciate your reply. Thanks.
Yes, because normally stepsisters wouldn't share any DNA. One-to-One comparison on GEDMatch.
Doubt here: lowing your SNPs at Size Mismatching (but not the cM) makes your "new" segments less plausible? Because (of course) I'm getting more segments as it seems...
Because...…. the bars says Base segments with full match green, and I have a lot of green in the graphs, so isn't that contradictory??
So are the colored line mine and whoever i chose toco pare
Hi how can this tool be used to confirm if you are a full or half sibling?
Full sibling: you will have fully identical regions and share between 2000 and 3000 cM
Half sibling: you will have no fully identical regions and share between 1300 and 2100 cM
What does it mean if are NOT a match at 7 CMs; but, if you change the default to three (3) CMs, you ARE a match. Can you definitively say the two kits ARE a DNA match? What does it mean?
No, you can't say you are a match..... but you still may be related. For example, my wife and I show no matches at 7, but 18 cM match at 3. 18 cM would indicate perhaps 4th cousins. However, our genealogy indicates that although we are related several different ways, the closest relationship is 7th cousins. So the 18 value is the result of false matches. Autosomal DNA comparison is very useful for close relationships, but beyond about 4 generations, is not very useful.
@@charleshoffpauir3752 Thanks for taking the time to reply to me and 'splain it. Therein lies my challenge in trying to find the fathers of my 3rd great grandfather which would be six (generations) from me. rats!
Watch this video about whether smaller shared cMs are valid. That should help. ruclips.net/video/aFSNXlYFnVI/видео.html
MY IQ is really high, so I understand even the most challenging scientific info fairly well. But, huh...I think the problem is you are TOO familiar with your topic - you don't know how very, very much you know. It makes it harder for you to explain things because you seem to be starting your explanations at college level - and most of us are just at first grade. I am still trying to figure out what the effing colors mean!!!
SO: please show us KINDERGARTEN ultra beginners level and move on up. Otherwise, your style is wonderful and you are very personable. Don't change a thing in that regard!!
I agree 100%. I still have no clue what I am looking at.
Agree! Way to complicated - but I am sure if someone was going to do this professionally for say ... the FBI - it would be great.
Amen Alex....I'm no dope and have among other things a Master of Science degree. But this series of videos should be labelled "For Professional level Genealogists Only". This is WAY too technical for 99% of the people who want the Cliff's notes version.
I agree with these guys, why is this so complicated. We got colors, we got tons of stuff on the dashboard, I got nothing!!!!!! All I want to do is find out who I am related to, jesus !!!!!
I took your feedback into account. Watch these follow-up videos. Then let me know if I have explained things better.
6 Questions to Better Understand GEDmatch One-to-One Tool ruclips.net/video/h8QPjYlSV2Q/видео.html
Beginner's Guide to the GEDmatch One-to-One Tool | Genetic Genealogy ruclips.net/video/KNTBYRcjmyA/видео.html
Have you removed the 1:1 column?
It would be nice to see an eg of a distant relation with a small segment as i really dont get it
I can do a video on that next year.
@@FamilyHistoryFanatics almost 2021 now :(
Could you also provide tutorials in downloadable Word versions? Easier to search for a specific query, searchable offline, easier on the planet.
I'm a RUclipsr. Sorry. But reach out to GEDmatch support and request such tutorials.
Hello, thank you so much for your great videos! I tried what you said and it's very strange because the kit that gedmatch said I'm closest to, when I put it in the one on one match it says the kit can't be found. How did it find it to give me the kit number, but then can't do a one on one comparison?
Hi Barbara Biggs, I don't know for definite, but is it possible that the person who originally submitted their DNA sample has since deleted it from Gedmatch?
You might check if you have an extra space when you entered the kit (or just click on the largest cM link from the One-to-Many
I have done a lot of genealogy and I have my Dna from ancestry on Gedmatch. I have a brick wall with my Shelton family and I have used the Gedmatch ids from wiki tree on the lines I feel are most likely to be mine and I have a match and it says CHR18 B37 start position B 37 end position Centimorgan 11.1 Snps 233. This match didn't provide a gedcom and I haven't been able to contact them so what can I gather from this matching to go forward and try to find the our connection another way?
A cM value of 11 would, on average, represent a kinship of 4th cousins. However there is considerable variability around these values, especially for distant relationships. (4th cousins would indicate a common ancestor of about
Great-great-great grandparents)
Yes. If you have a valid match of more than 7 shared centimorgans (cMs), then you will likely need to research around this match using other methods. Make sure you have created a Leeds Method chart (if they share more than 40 cMs). If not, use the clustering tool for matches with lower cMs ruclips.net/video/lTboZ5q10Nk/видео.html. If you see how your other shared matches relate to that shared match, you might be able to figure this out.
Question. If you lower snp to 25 and 3 cms would all the matches be false? I'm in a group that provides us with ancient kits. I want to believe the match is real but I find I match almost all the ancient kits provided from aall over the world.
All is a superlative, so I try to not use them. In this case, 25/3 would also include all of the matches that were at the default 200-400/7 of which we know half are real. So no all of the matches would't be false. Statistically however, probably 99% of the matches would be so you would be hard pressed to find those real matches.
Hello Andy Lee I recently had my DNA results from Ancestry DNA and would like to upload my results to GED Match. Can you tell me how to do it?
in Ancestry, click on "DNA", then click on the top-most choice, your summary, then click on "settings" on the right, then go down and find "download my stuff" or similar. This is the file you upload to gedmatch.
Sorry it took so long to find your comment. Check out this video ruclips.net/video/g84YAqzR17U/видео.html
What DNA kit is each build?
All of the companies provide information in the Build 37 format. FTDNA allows you to also get it in another format
Great video..very helpful ...THANKS!
Glad to help
I agree. My problem is that anybody related to me has never heard of Gedmatch and has not uploaded their raw data, so I cannot get a match. Should I ask them to let me have their raw data and upload it myself?
@@davidcrompton8896 I just have myself on gedmatch, and recently, I have been asked by several persons if my husband was on gedmatch or if I could put him on because of his BOITNOTT line. People are researching it and are coming up matching with him. His g grandmother was a Boitnott, and I have the line back to 1814. His line is long lived except for his g grandfather who died young. They all lived into their 90's, so they went back pretty far easily. I put him on gedmatch.
was means this with my broter?
Largest segment = 151.5 cM
Total Half-Match segments (HIR) = 3542.5 cM (98.835 Pct)
Estimated number of generations to MRCA = 1.0
50 shared segments found for this comparison.
152479 SNPs used for this comparison.
99.994 Pct SNPs are full identical
It looks like you are identical twins since you share 3500+ cM
I'm trying to get to One-to-One, through a specific connection. So, if I go to "One-to-Many" and find a match I click on, which puts that person in the box above, then click search, it shows many matches that are not in my matches, unless I just can't find them and need to SEARCH every single name using the find feature in my browser. Is there a way to do a one to one with their matches through beta? Do I just follow the steps here, and add my test kit number for original, each time, or is there an easier way?
You click on the Largest cM link to get to the One-to-One tool.
Thank you@@FamilyHistoryFanatics.
What’s a “Rutgers liftover table”??
I'm not sure. Did I mention it in this video?
What is comparing chromosomes important if you have already identified them as a match.
It is useful when you find other matches who share the same segment. Then you know that they are related along that same line.
What do the segments and SNPs mean? The only reason I watched and the only thing not explained.
This video doesn't explain those Try this video to better understand what a centimorgan is ruclips.net/video/5VmgHOhG6io/видео.html
Also, try this brief post www.23andme.com/gen101/snps/
Did you mean to say that you don’t like to prevent hard breaks at the end?
Maybe I am not understanding it all. I am an adult adoptee trying to find birth relatives. on the 1 to many charting the Gen column has me a bit confused. Can you explain the numbering a little more? On my chart the highest matches range from a 2.9 to 4.3. How distant are they from me? thank you in advance
I made a video to discuss this:
What is the Gen Column on GEDmatch One-to-Many Results? ruclips.net/video/V9hvINBzZmc/видео.html
MRCA MOST RECENT COMMON ANCESTOR, WHERE DO I FIND THIS IN GEDMATCH
Try this tool ruclips.net/video/NTHq2N7bing/видео.html
Very Helpful!
Glad you thought so.
I know I am late to the party but hoping you can answer my question. The comparison also computes the MRCA. If the result is 2 how do we know which kit to apply this to? I am comparing 2 kits where I assume they are niece and aunt (actually half relationship) but it could be a 2 generation difference. Is the 2 applied to the niece and I am correct that the grandfather is the common ancestor or is it applied to the aunt and the great-grandfather is the common ancestor?
I discussed the MRCA scores in this video ruclips.net/video/jB0TJko5alc/видео.html
When trying to find matches for Paternal side only what is the best way?
Have a close relative (uncle or cousin) from your paternal side and see what matches you share in common.
What's the difference between a full match and a half match?
A full match is when one a chromosome pair you share dna with your match for both your maternal and paternal lines. Your siblings, your children, and your grandchildren would fall into this category. For a half match, on the chromosome pair, you share DNA with your genetic match through either your maternal or paternal line, but not both.
If someone is 2.5 ? I know you said 1.0 would be a parent.:. I’m just wondering is it a cousin or half sibling? We match on a lot of cro but I don’t know how to read them
2.5 is around a 1C1R level of sharing. I use the amount of shared cM far more often than I use the gen column.
I was hoping he'd go over the info in the bottom. like this -
Total Half-Match segments (HIR) = 104.2 cM (2.905 Pct)
Estimated number of generations to MRCA = 3.6
what does the number of generations to MRCA mean?!
Lisa Jarmuz most recent common ancestor.
Serg Gia has it accurate.
@@FamilyHistoryFanatics I would like to take this conversation a little farther. I'd like to understand how the summary information allows us to judge the quality of the comparison, For example I have a result...
Largest segment = 19.2 cM
Total Half-Match segments (HIR) = 19.2 cM (0.535 Pct)
Estimated number of generations to MRCA = 4.8
1 shared segments found for this comparison.
290637 SNPs used for this comparison.
52.824 Pct SNPs are full identical
I understand the Largest Segment and the MRCA, but I'm a little unclear on the Half-Match segments especially when the last line talks about 52.824 Pct SNPs are full Identical. what does the number within the () represent? and how does it relate to the Full Identical pct on the bottom line. Also have no idea of what the figure 290637 SNPs used for this comparison. Is it the number of SNPs within the segment where the match is? Could you also explain and put into context the Half Match and Full Identical figures ? Sorry for all the questions, but I thought this video was very good at explaining on how to use the tool, It might make sense, unless it's already been done and I haven't discovered it yet, to have a video just on interpreting this info and explaining how it helps one to understand the quality of the comparison and to compare it to another similar comparison.
Thanks for the videos, they do a great job explaining this complex topic.
Q:- Forgetting the chromosomes I look at the five lines of data at the very bottom of the natch data as I can have a low cM but Total Half-Match segments (HIR) or high % & / or shared segments. How much faith can we put in that data?
All of that data is simple facts. Unfortunately, it isn't useful for genetic genealogy (except in a really nerdy sense).
What is a SNIP?
When I look at the graphics all the colors are somewhat “grayed out”, not clear like what is shown here. Would that be a problem at MY end? The only device I have is an iPad-do I need an actual computer/laptop to make the most out of the tools?
I thought I could take a screenshot and post it here but apparently not…
Sounds like a problem on your end.