Видео 25
Просмотров 18 833

28:04

The Birthday Paradox and Autosomal DNA Projects: The Power of Numbers in Autosomal DNA Projects

34:33

Genetic Genealogy Technology Yet to Come

10:28

Fully Calculating DNA Coverage Recursively

37:29

Relationship Calculator panel discussion on 22 July 2023

1:24:19

DNA Relationship Calculators

39:28

Putting Ancestors' SNPs on the Map by Rob Spencer

The monoparental SNPs that we use in genealogy -- simple mutations in Y and mitochondrial DNA -- occur at specific places and times, and as such mark out the paths that our ancestors followed from the Paleolithic to the present day. Four types of data can be used to infer SNP locations: ancient DNA samples, citations of ancestry from modern DNA testers, census data, and specific family history. In addition, archaeology and the SNP haplotrees provide historic context, dates, and connections, while mathemetical modeling connects the dots. In this presentation given on January 27, 2024, Rob Spencer discusses the methods, results, and limitations in SNP mapping, with examples, error analysis,...

Видео

28:04

Big Y Results are in... Now What?

Просмотров 5296 месяцев назад

William Watson's presentation describes the analysis of results from Big Y-700 DNA tests taken through FamilyTreeDNA.com, using tools from that company and from third parties to provide genealogical insights about the relationships between sample donors. It assumes a basic familiarity with genetic genealogy and provides links to the tools used and some useful resources for further information. ...

The Birthday Paradox and Autosomal DNA Projects: The Power of Numbers in Autosomal DNA Projects

34:33

The Birthday Paradox and Autosomal DNA Projects: The Power of Numbers in Autosomal DNA Projects

Просмотров 3978 месяцев назад

In this presentation Wesley Johnston explains that the same mathematics that enables the birthday paradox means that an autosomal DNA project can have a lot more success with a lot fewer kits than expected.

Genetic Genealogy Technology Yet to Come

10:28

Genetic Genealogy Technology Yet to Come

Просмотров 2778 месяцев назад

In this brief high-level presentation Wesley Johnston looks at generating facial autosomal DNA from a photo or other image and also at the application of quantum computing to genetic genealogy.

Fully Calculating DNA Coverage Recursively

37:29

Fully Calculating DNA Coverage Recursively

Просмотров 1118 месяцев назад

In this presentation Wesley Johnson explains how to recursively calculate DNA coverage of autosomal DNA test results. No method had existed for automating the calculation of DNA coverage. Wesley's 2022 paper in the "Journal of Genetic Genealogy" explained why only ranges and not a single number are needed to accurately represent DNA coverage when no children of the target person have tested. Th...

Relationship Calculator panel discussion on 22 July 2023

1:24:19

Relationship Calculator panel discussion on 22 July 2023

Просмотров 21211 месяцев назад

This video is a panel discussion held on 22 July 2023 with Brit Nicholson, Dave Stumpf and Rob Spencer that was hosted by Tim Janzen that broadly covers many topics related to relationship calculations using various types of genetic data. The panelists responded to prepared questions, but the dialogue was free flowing and delved into many topics pertaining to genetic genealogy.

39:28

DNA Relationship Calculators

Просмотров 59011 месяцев назад

This presentation given by Brit Nicholson on July 22, 2023 focuses on methods to estimate genealogical relationships using autosomal DNA data. In particular he discusses the SegcM tool, a tool that he developed. Note that 20 minutes 12 seconds into the video the sentences in that portion of the video should have said: “It's about 18 times more probable than half 1st cousin. Lumping them togethe...

44:33

DNAGedcom by Rob Warthen

Просмотров 1,1 тыс.Год назад

Rob Warten’s presentation focuses on the usage of DNAGedcom. DNAGedcom, an online platform for genetic genealogy research, offers tools and resources to analyze DNA test results. Rob discusses notable tools and features such as the Chromosome Mapping App and the Collins Leeds Method, along with a history of why DNAGedcom was created and results of that work.

The More the Merrier, YourDNA.family features by Andreas West

57:21

The More the Merrier, YourDNA.family features by Andreas West

Просмотров 212Год назад

Andreas West’s presentation focuses on methods needed to organize the large numbers of matches that people have who have done an autosomal DNA test, particularly at 23andMe. He discusses triangulated groups in some detail. He showcases one specific triangulated group that includes 110 DNA cousins and explains how he has identified several most recent common ancestors including one who lived in ...

Intermediate and Advanced Y-DNA Topics - Beyond STRs

1:12:40

Intermediate and Advanced Y-DNA Topics - Beyond STRs

Просмотров 394Год назад

Brad Larkin’s presentation offers a deeper understanding of Y-DNA Next Generation SNP genetic genealogy tests like the Big Y-700 and YSeq's whole genome sequencing. He journeys from biology, to data, to the phylogenetic tree, and finally to geographic interpretation. Topics include: explanation of raw read alignment to the genome which produces your SNP results; understanding your terminal SNP ...

2:10:39

Borland Genetics Web Tools and Database

Просмотров 510Год назад

Kevin Borland's presentation given on July 23, 2022 reviews the Borland Genetics Web Tools and Database, an autosomal database linked to a comprehensive suite of tools geared at mathematically constructing DNA profiles representing deceased individuals. The first portion of the talk covers prerequisite topics necessary to establish a foundation for understanding the methods and tools used in DN...

31:57

Autosomal DNA Match Lists

Просмотров 1582 года назад

Jef Treece's presentation summarizes autosomal DNA match lists and ways to create and download them, as well as to manipulate them for input into Gephi and other programs. He has written a program that allows one to download their match list from Ancestry.com and convert it from HTML into a CSV file. He discusses this program and shows how he runs it.

45:35

Graphs for Genealogists

Просмотров 7812 года назад

Dr. David Stumpf's presentation is about Graphs for Genealogists (GFG), an open-source software package optimized for genealogy data management and analytics using multiple FTDNA kits. The primary purpose of the analytics is to discover new insights and provide actionable recommendations for further genealogy research. GFG traversals collect concatenated strings to create Ahnentafel numbers and...

Genetic Affiars features by Evert-Jan Blom

43:30

Genetic Affiars features by Evert-Jan Blom

Просмотров 7522 года назад

Evert-Jan Blom's presentation describes the improvements he has been making to the features of his AutoCluster tool and other tools that he has available for genetic genealogists at www.geneticaffairs.com.

Mitochondrial DNA Presentations by Miguel Vilar, Paul Maier, and Roberta Estes

2:54:26

Mitochondrial DNA Presentations by Miguel Vilar, Paul Maier, and Roberta Estes

Просмотров 6072 года назад

This is a series of presentations concerning many aspect of mitochondrial DNA given by Miguel Vilar, Paul Maier, and Roberta Estes on April 24, 2021 for the GFO/Portland ISOGG advanced DNA group. Dr. Paul Maier and Dr. Miguel Vilar are two of the leading experts on mitochondrial DNA. Paul is the population geneticist for Family Tree DNA and Miguel was formerly the lead scientist for the Nationa...