How do DNA ethnicity results for identical twins compare at AncestryDNA, 23andMe and MyHeritage? Read the answers here, along with a bonus question about 23andMe traits. Somebody finally did it. A research group has tracked the ethnicity results of 21 pairs of...
How we can extend the limits of DNA ethnicity estimates to make these tests more reliable and relevant for more people? A look ahead at the next generation of DNA ethnicity estimates. This is the final article in Jayne’s excellent, in-depth series on Ethnicity...
Last updated: November 24, 2025 Which DNA testing companies shed the most detailed light on African ancestry? What makes Africa the most genetically diverse continent? Why is it so important for scientists to understand the genetic heritage of those with...
DNA ethnicity estimates are more reliable for certain locations than others. Here’s which regions of Europe are more (and less) likely to be identified correctly. Here’s a great word: allele [uh-leel]. It refers to a specific physical location on a chromosome that can...
DNA ethnicity estimates are so complex—like the weather—that they vary for the same person even at the same testing company. Here, let us explain. Is the title of this article unsettling? Don’t worry: I think you’ll actually be relieved at the explanation by the time...
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