What Can DNA Tests Answer? What they can't

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  • Опубликовано: 14 дек 2024

Комментарии • 72

  • @scorecustom
    @scorecustom 7 лет назад +2

    Can you please do a video showing how to record the results by taking DNA Match, and following that person's branch members to the "common ancestors." Once someone does that, it will take the confusion out of the whole process. Just a thought. So many people ramble about certain topics without resolution. Show the masses how to read results and record results with the purpose of actually adding the DNA match to their family tree correctly. I sure hope you take time to do that, it will help so many. Thank you.

    • @FamilyHistoryFanatics
      @FamilyHistoryFanatics  7 лет назад

      That topic is in the hopper, we started to do a DNA episode every week starting this week so it will probably be a couple months but we'll get to it.

    • @scorecustom
      @scorecustom 7 лет назад

      Cant wait! I look forward to watching them, and thanks again.

    • @SarahjTaylor-cd6nz
      @SarahjTaylor-cd6nz 7 месяцев назад

      I do not understand my daughter dna test pass 99.9998 what to do now

  • @sdseals2076
    @sdseals2076 7 лет назад +1

    Good evening, what was the name of the app that analyzes your eye color? Thank you.

    • @scorecustom
      @scorecustom 7 лет назад

      It's called GEDmatch, not sure if they have an app, but you can go to www.gedmatch.com. Another thing, you will need to upload your raw DNA before you can work with the tools.

    • @FamilyHistoryFanatics
      @FamilyHistoryFanatics  3 года назад

      Thanks Score for responding

  • @sillystarlight
    @sillystarlight 5 лет назад

    Okay, i have a set of great grandparents who are captives. Great grandfather looks white and his wife is dark. My grandfather said his mother was Aztec so where do i look on the dna to help identify where we can look. My father has passed as well as hia siblings. My brother and sister did the dna when i did. We are really lost but found a lot of mexican relatives mostly 3 to 5 cousins. Since i know the tribes went to TX, LA, NM, and Mexico for captives it helps with my great grandmother. Any suggestions?

    • @FamilyHistoryFanatics
      @FamilyHistoryFanatics  5 лет назад +1

      Focus on contacting the Mexican ancestors and finding out if they have trees built.

  • @kentmattingley1792
    @kentmattingley1792 7 лет назад +1

    I have a question about the AncestryDNA test results. They said that I have two, I guess you'd call High Confidence ethnic regions, which are Great Britain and Ireland/Scotland/Wales. No real surprise there, as it was what I was expecting, but it shows eight different Low Confidence regions, including Finland/NW Russia, Iberian Pen, Europe West, Scandinavia, Middle East, European Jewish, Europe South, and Africa North, the last three being 1% or less. When I click on the link to see all 150 regions they test for, they have all the regions listed with some of them having numbers on the right side that only total 139, not 150, ,and some, like Native American, have numbers to the right of then, but the dot to the left of Native American is not colored in. Does that mean they checked 30 times to see if I have Native American ancestry, but since the dot wasn't colored in and it isn't listed as any of the regions my ancestors are from, they didn't find any Native American DNA in my sample? Family stories say that both my father and mother had Cherokee ancestors, but this seems to indicate I didn't get any of their DNA . The numbers on the right of the "all 150 regions" listing are confusing, at least to me. Please explain. Thanks. Kent M.

    • @FamilyHistoryFanatics
      @FamilyHistoryFanatics  7 лет назад

      Stick with the high confidence regions. The low confidence ones, particularly those below 1% are likely noise.
      When you view the 150 population list, the numbers to the right are sub populations. Click on them to expand. You'll notice that for native american, none of the populations are in regions that were inhabited by the Cherokee (in fact, the majority of native americans from the US and Canada are not represented in the Ancestry database), so the test isn't looking for Cherokee DNA. So your family stories may still be true, but DNA testing is not going to confirm it for you.

    • @kentmattingley1792
      @kentmattingley1792 7 лет назад

      OK, thanks, I appreciate your quick response.

  • @staceycoates1418
    @staceycoates1418 2 года назад

    So here was the start of the genetic genealogy videos!

    • @FamilyHistoryFanatics
      @FamilyHistoryFanatics  2 года назад +1

      Yep. That's the first one when Devon told me to start making videos for this channel about my genetic genealogy passion.

  • @Antonio-md9sd
    @Antonio-md9sd 6 лет назад +1

    My mother had her DNA test with family tree DNA and the results are troubling. The results tell she has none,O,Ancestry from Iberia. Most of her ancestors were from old families in Spain.This is totally absurd.I have myself in my test 30%from Iberia. Thats why people distrust these tests.

    • @FamilyHistoryFanatics
      @FamilyHistoryFanatics  6 лет назад

      I think people need to separate out the calculated estimates (ethnicities) to the actual scientific matching.

    • @faithlewis4446
      @faithlewis4446 5 лет назад +1

      Well, I think those locations overlap if I'm not mistaken, but the tests are not 100% accurate and are said to keep updating over time based on the collection of information.

    • @crystalbishop6971
      @crystalbishop6971 5 лет назад

      DNA tests aren't totally 100%; it is only general and the DNA test from Ancestry only goes back a couple hundred years and some genes from ancestors don't show up. It is random also- close to 50'50 per parent but no guarantee if your mom was 100% Spanish you will be 50$ Spanish-may get 47%, 45%, etc depends on which genes you get from your mom.

  • @LivingMyBestLifeIAm
    @LivingMyBestLifeIAm 5 лет назад

    My first cousin was tested at about an 8.8% match to me (621cm in 27 seg on My Heritage and 584cm in 34 seg on Ancestry). Is this an unusually low number for a full first cousin?

    • @FamilyHistoryFanatics
      @FamilyHistoryFanatics  4 года назад

      Low in the range, but not unusually low.

    • @LivingMyBestLifeIAm
      @LivingMyBestLifeIAm 4 года назад

      @@FamilyHistoryFanaticsHis half sister just got her results and she is 8.9% match to me. I shouldn't be wandering about their mother? Like perhaps she was not my mom's genetic sibling but perhaps a cousin? Lol the wheels are turning.

  • @johnwrou
    @johnwrou 6 лет назад

    Which DNA test would be the most likely to show results about the specific region/country in Europe? Is there a test, for example, which would show that some of my autosomal DNA (perhaps just under a fourth) comes from Scotland (as opposed to just the 'British Isles')?

    • @FamilyHistoryFanatics
      @FamilyHistoryFanatics  6 лет назад

      Not reliably. All of the companies claim to be able to do so, but none of them have documented genealogies (beyond grandparents) to back up those claims.

  • @gilbertbloomer586
    @gilbertbloomer586 7 лет назад

    I'm not so sure about the accuracy of these eye colour results. One on dna.land said I should have brown eyes and the one on gedmatch said blue and and the same for my double cousin but I have green eyes (when I was younger they seemed more bluey green but with age have become more green) and my double cousin has hazel brown eyes. By the way my father had hazel brown eyes and my mother had brown eyes. I have a brother with blue eyes as well.

    • @FamilyHistoryFanatics
      @FamilyHistoryFanatics  7 лет назад

      Eye color (and hair color and skin color) is a complex trait to predict because there are so many genes involved. Blue and Green are the same color for most of these genes.

  • @tanyakasim3988
    @tanyakasim3988 4 года назад

    What does it mean when your DNA results haven't changed much or at all?

    • @FamilyHistoryFanatics
      @FamilyHistoryFanatics  3 года назад +1

      That your ethnicity estimates are stable. I would hope that your DNA match list would increase as more people take a DNA test.

    • @tanyakasim3988
      @tanyakasim3988 3 года назад

      @@FamilyHistoryFanatics That's cool. 😎👍

  • @catsmeow7839
    @catsmeow7839 2 года назад

    My question is...My grandpa on my dad's side was 1/4-1/2 Cherokee from the Cherokee Nation in Oklahoma...my dad was raised at the Cherokee Nation Rez. Why does this not show up on my DNA test. It showed 76 % English, 12%East European, 1% Middle Eastern, with the rest Irish.

    • @connorcampbell5274
      @connorcampbell5274 2 года назад

      American Indians notoriously have bad sample sizes.

    • @FamilyHistoryFanatics
      @FamilyHistoryFanatics  2 года назад +1

      US Native populations have not consented to test. Thus, you will not have that ethnicity show up in your results.

    • @catsmeow7839
      @catsmeow7839 2 года назад

      @@FamilyHistoryFanatics Maybe it will show up another ethnicity, like oriental? I did my heritage twice, and am currently waiting for 23&me...anyway thanks

  • @annetteferrari8093
    @annetteferrari8093 6 лет назад

    Love your RUclips channel. Very informative! Here's my question. We tested my brother through ancestry.com. 68% Southern European (no surprise, we're Sicilian, back 5 generations that we know of) 10% Middle Eastern, ( we figured there would be some but not 10%) and 10% Eastern European, (specifically Ashkenazi Jewish). Again, not too much of a surprise, but 10% seems like an awfully big number.
    With that information;
    1. How far back in our family line does our 10% come from? Which level of Grandparents?
    2. How does Ancestry pinpoint a religion? Judaism. Or do they have some kind of database of Ashkenazi and Sephardic Jews? Really confused on that one.
    3. I'm really proud and truly interested in our newly found family heritage! This has peaked my interest to look for those distant ancestors we never knew we had. Our roots run deep in places we never imagined! :-)
    Thanks so much for your help and for providing all of this fabulous information.

    • @FamilyHistoryFanatics
      @FamilyHistoryFanatics  6 лет назад

      1) 10% could be 1 great grandparent or 2 great great grandparents or 4 great great grandparents...
      2) Ashkenazi Jews have been genealogically isolated for hundreds of years because of the religious doctrines to marry within the religion. Any group (not just religious) that had similar genetic isolation could also be pinpointed.
      3) Congratulations on the next step in your journey to discover your past.

  • @audunedvinmagnussen9894
    @audunedvinmagnussen9894 5 лет назад

    Can DNA Tell I'm Related to My Paternal grandfather's Brother?

    • @FamilyHistoryFanatics
      @FamilyHistoryFanatics  5 лет назад

      Absolutely, you should share about 12.5% of DNA with your great uncles.

    • @sr2291
      @sr2291 3 года назад

      Yes.

  • @robertnairn7353
    @robertnairn7353 4 года назад

    With I had seen this before doing my 23andme test. Found it a waste of money and time, didn't tell me anything I did know all ready. Basically said I am Irish British and the health side of it was more well you have a marker for this or that definately NO way as a personal profile as felt it should of been.

    • @FamilyHistoryFanatics
      @FamilyHistoryFanatics  4 года назад

      Many people who take DNA tests are not going to tell you things you don't already know, particularly when it comes to ethnicity. As for the health reports, since many of the reports are governed by the FDA, 23andMe has to be very careful about the information you can access.

  • @a.bourne6386
    @a.bourne6386 7 лет назад +1

    I recently uses myheritage( on sale). And the only information I could get for my family( mother's side- don't know much about father's- didn't know him)), is that her family comes straight up from England. Even down to immigration info. Cool, but... I wanted more. So, interestingly, there's always been this story my mother's father told, of being Indian. Well, the only physical difference( I have photos) is his dark skin, brown eyes and dark hair. His wife( my grandmother), has generations of family with dark hair and fair skin. I'm saying this, cause my dna results raises more questions. Like... Hundreds. Results say I'm 55.9% northern Europe( that's Irish, Welsh, Scottish), 30% English( there she is!), and 9.3% Scandinavian. Cool. Then comes that 4.3% interesting bit. West Asian. ?? Really? It's not like I have any paper trails or any other proof. My aunt was also darker skinned toned with dark hair and brown eyes like her father. But... West Asia? Don't get me wrong. Would be sweet!! Should I break the bank again, and choose ancestry dna for another go? Is this possible?!! You've raised more questions for me!... Ahhhhhh....

    • @FamilyHistoryFanatics
      @FamilyHistoryFanatics  7 лет назад

      Before you break the bank, upload your results to Gedmatch. They have a number of heritage/admixture calculators that you can use. If several of them are showing that West Asian, then perhaps you have an idea of your dad's heritage.

  • @williamgerlach2162
    @williamgerlach2162 7 лет назад

    I am assuming that if I take an "au" test from any of the companies, I can upload it to my profile on Ancestry.com and use its wide database. Correct?

    • @FamilyHistoryFanatics
      @FamilyHistoryFanatics  7 лет назад

      I am not aware that Ancestry allows uploads from the other companies. Only MyHeritage and FamilyTree DNA allow uploads of other companies DNA files.

    • @williamgerlach2162
      @williamgerlach2162 7 лет назад

      Thank you!

  • @mathisfournier929
    @mathisfournier929 7 лет назад

    i have a question. What is the most accurate dna test for ancestry

    • @FamilyHistoryFanatics
      @FamilyHistoryFanatics  7 лет назад

      There is no best for ethnicity. Each company has their own proprietary formula and uses their own reference sets. The best way to find out what countries your ancestors are from is to do some genealogy research and find out. DNA will not tell you where all of your ancestors are from because after the 6th generation, you don't have DNA from all of your ancestors.

    • @Sarah24Michelle
      @Sarah24Michelle 7 лет назад

      Family History Fanatics which DNA test is your personal favorite?

    • @FamilyHistoryFanatics
      @FamilyHistoryFanatics  3 года назад

      It changes every year. That's why i do an updated best of the test each January

  • @verasmanful
    @verasmanful 7 лет назад

    Why is my ancestry.com and ftdna so different? Ancestry.com 98% European , ftdna 97% European , however ancestry.com 2/3 British 1/3 Western European , ftdna 2/3 Western European 1/3 British. Ancestry.com 1% African, Senegal, ftdna 2% African, Benin/Togo , Ancestry.com 1% Asian, Iran , ftdna 1% Asian, Siberia....... roughly simplified

    • @FamilyHistoryFanatics
      @FamilyHistoryFanatics  7 лет назад

      To begin, ignore anything that is 1% or less. That is probably noise and if it isn't couldn't be distinguished between noise. The reason why your ethnicity results are different is two fold. 1) Each company has a different algorithm that they use for calculating those results. 2) Each company uses a different set of reference populations to compare your results to. While there is some overlap in the reference populations (from research DNA sets), some of the reference population is made up of that companies customers that meet the reference population criteria.

  • @michaeladams7782
    @michaeladams7782 7 лет назад

    ok, I don't quite get the 120 people in a generation is all you're genetically related to. paternal grandfather had 11 brothers 3 sisters, each other than him, had at least 4 children. a few had many more, dad has over 120 first cousins when you count his maternal line as well. so not all of his first cousins are genetically related?

    • @painappuruclau
      @painappuruclau 7 лет назад +1

      I think its a 120 back, not on the same branch level as you, so its your parents (2), your grandparents (4) your great grand parents (8), thats 14 so far, and so on. Thats how I understood it, might be wrong.

    • @michaeladams7782
      @michaeladams7782 7 лет назад

      but, he keeps saying 120 per generation and when you get further back you have more than 120 in that generation.

    • @FamilyHistoryFanatics
      @FamilyHistoryFanatics  7 лет назад

      Yes, you do have more than 120 in generations starting with the 7th. But because of the way DNA recombines and is passed down, you only get DNA from about 120 of them.

    • @FamilyHistoryFanatics
      @FamilyHistoryFanatics  7 лет назад +2

      Not quite. You have your parents, 120

    • @FamilyHistoryFanatics
      @FamilyHistoryFanatics  7 лет назад

      There have been several comments about this on different videos so I'm going to put together a video and try and explain it better.

  • @romualdoorciga297
    @romualdoorciga297 7 лет назад

    if i take dna test,, they gonna see out genealogy from 1st to 7th or 8th generation right? correct me if i am wrong, usually a person might get a result combine from his mother and father and a percentage of his or her grandparents, if a person grandparents probably marry a prince or a princess how would an individual take his or her take back what his or her grandparents ownership or how would a someone become valid if
    there are many person probably might shared the same dna from their grandparents?

    • @FamilyHistoryFanatics
      @FamilyHistoryFanatics  3 года назад

      If you take a DNA test, you'll see your genetic relatives based on how much shared DNA you have. That amount could tell you how closely related you are to another person (hence how many generations back your common ancestor appears).

    • @ironknives5395
      @ironknives5395 2 года назад

      7th generation is over 250 forefathers think of it like that

  • @SarahjTaylor-cd6nz
    @SarahjTaylor-cd6nz 7 месяцев назад

    If my dna results 99.9998 does this mean my daughter is mine

  • @stephenwadsworth6456
    @stephenwadsworth6456 7 лет назад

    DNA can not tell you who your parents are, only tell you who are not.
    Because y-DNA is not mutually exclusive, it is not a factual exclusive link to father and son.
    Example: It can not determine the son of which brother with the same woman, because both brothers have the same y-DNA. mt-DNA can not determine the daughters of which sister with the same man, because both sisters have the same mt-DNA.

    • @FamilyHistoryFanatics
      @FamilyHistoryFanatics  7 лет назад

      Yes, but y-DNA combined with Autosomal DNA will definitely tell you which brother was your father because while both brother's received the same y-DNA from their father, they received a different combination of Autosomal DNA from their father, only 50% of which is the same. The likelihood that you received 100% of the shared autosomal DNA of the brothers is so statistically small as to essentially be 0. Same for Mitochondrial DNA.

    • @stephenwadsworth6456
      @stephenwadsworth6456 7 лет назад

      The point I was making is DNA is not a definitive factual link from father to son. DNA can only tell you who one's father is not, but it is not definitive as to who one is. Without testing everyone that has the same y-DNA can it be determined who is the best probability of being the actual father.
      There is no definitive factual link from father to son.