Science of Admixture

Garrett Hellenthal, statistical geneticist at the Genetic Institute, University College London, gave a very interesting talk at the recent Who Do You Think You Are convention in England on the science of how DNA companies predict ethnicity. Given that ethnicity is the main reason why the majority of clients get their DNA tested at AncestryDNA, it is a very good overview of just how the different DNA testing companies arrive at their ethnicity conclusions.

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