The following excerpt is from a short article titled Finding Fake Roots in the Gene Expressions column, written by Razib Khan for Discovery Magazine. You can see that he’s not impressed by the seeming oversimplification of genetic results used for family history:
I haven’t watched much of Henry Louis Gates Jr.’s Finding Your Roots series. It seems like Gates has kind of created a mini-empire in genealogical series on PBS. More power to him, but it hit diminishing returns for me a long time ago. But I see clips online here and there. And something which I saw really kind of disturbed me. From what I can gather Gates regales his subjects with their DNA results, and tells them their ancestral quanta fractions. Nothing too amazing. But it seemed clear to me that when Gates referred to “European”, “Asian” and “African” ancestors, he was communicating to the audience that these quanta really represented those exact populations!
I assume that the geneticists Gates works with explained to him the falsity of this typology. I also understand that the television format results in natural license…
