Instead of derailing the other thread on under-represented cultures, let's continue here. I'm interested in the information people have on the subject, and also happy to share the research I know of. I started the scientific part of my career looking at just such issues - population genetics, primarily in the context of out-of-Africa versus multiregional hypetheses. Most of what I did was on Alu repeats, which are transposable genetic elements found in primates.