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On Top of the World

Sep 27, 2016

In this episode, Dave and his favorite certified genetic counselor, Katey Mayberry, take a look at the genetic evidence for the settlement of the Americas. The first article, by Rasmussen et al in Nature, deals with the controversial origins of Kennewick Man/the Ancient One, a skeleton found in Washington State and dating back at least 8400 years. The second article, written by Llamas et al in Science Advances, deals more generally with the early migrations into the Americas. Over a couple Canadian beers, we talk about Y-DNA, mtDNA, haplotypes, TMRCA, single-nucleotide polymorphism, and high posterior density with varying levels of success! Follow along at home as I try to make sense of the charts on p.4 of Llamas et al!  This is a highly specialized field, but as Katey makes clear, if used carefully it can be extremely useful to world historians of all types. Recommendations are:

Katey – Genetics Home Reference

Dave – Dillehay, The Settlement of the Americas