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Author: Margaret O’Brien
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Triangulation On GEDmatch (Walkthrough)
Never heard of triangulation? Or maybe you’ve tried the GEDmatch Triangulation Tool and just don’t get it. This article gives a step-by-step walkthrough of triangulating DNA matches with a mix of the GEDmatch tools. What Is Triangulation On GEDmatch? Triangulation may seem complicated, but it’s not. It’s easiest to explain with an example. Let’s say…
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How To Use GEDmatch Segment Search (Explained)
The Segment Search tool is part of the paid tier on GEDmatch. It shows you the chromosomes and locations where you share DNA with all your matches. The report shows all matches who share DNA with you on a specific chromosome. You can further restrict to a start and end point within a chromosome. You…
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Who Has The Largest DNA Database? (2023)
The consumer DNA testing market grew rapidly over several years after Ancestry.com launched its autosomal DNA kit in 2012. However, the rate of growth slowed significantly from 2018. But this doesn’t mean that growth has stalled. I’m a customer of all the major companies, and I see new DNA relatives on each site with every…
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How To Use GEDmatch – Start Here
We have written about thirty articles and tutorials on the wide variety of tools on GEDmatch. This “how to use” guide gives you a simple overview and sequence for beginners to follow without being overwhelmed. I’ll focus here on the free tools. We’ll look at the paid tier in a separate guide. What Is GEDmatch…
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How Far Back Does GEDmatch Go? (Explained)
When you upload DNA results to a free GEDmatch account, you get access to a set of tools to explore ethnicity and DNA relatives. The GEDmatch website uses the term “admixture” for techniques that attempt to calculate the different geographic origins within your DNA. Ancient Versus Recent Admixture Estimates On GEDmatch There is a major…
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How Far Back Does MyHeritage Go? (Explained)
A DNA test from MyHeritage offers several features for researching your ethnicity and DNA relatives. These features have different limits on how far back in time they can go. MyHeritage Genetic Groups use ancestry analysis and family trees to show where ancestors may have lived back to the 1600s. MyHeritage shows DNA matches down to…
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How Far Back Does 23andMe Go?
A 23andMe DNA test offers several features for researching your ethnicity and DNA relatives. These features have different limits on how far back in time they can go. The 23andMe Ancestry Timeline goes back over 320 years to the year 1700, which represents from 8 to 11 generations. The Recent Ancestor Locations in 23andMe’s ethnicity…
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How Far Back Does Ancestry DNA Testing Go?
Ancestry.com claims that their ethnicity estimates go back “hundreds to more than a thousand years”. Can an Ancestry DNA test really go back 1,000 years? This article will show how this is valid for some customers but won’t be for others. If you’re building your family tree, Ancestry.com claims that their DNA features can go…
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How To Use The 3D Chromosome Browser On GEDmatch
The 3D Chromosome Browser is one of the two chromosome browsers in the free set of GEDmatch tools. You’ll either love the 3D display or find it less useful than the 2D options. It’s worth testing the 3D version on different scenarios to see if it suits your research. I’ll run through a specific scenario…
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Abbreviations In the GEDmatch Admixture Projects
When you start using GEDmatch, you will see plenty of abbreviations in the admixture projects. This article starts with a summary of common abbreviations, followed by a detailed section on each one. If we’ve missed any, let us know in a comment. Summary Of Abbreviations In Admixture Calculators This article gives detailed descriptions of abbreviations…