Outgroups AG3-MA1 Andamanese_Onge Chukchi Iran_Neolithic Karitiana Kostenki14 Levant_Neolithic Mbuti Mota Papuan Ust_Ishim Villabruna Adygei Armenia_EBA 0.633±0.062 Barcin_Neolithic 0.054±0.042 Scythian_IA 0.260±0.038 Han 0.053±0.011 chisq 4.712 tail_prob 0.787883 Adygei Armenia_EBA 0.580±0.127 Jordan_EBA 0.084±0.082 Scythian_IA 0.286±0.053 Han 0.050±0.011 chisq 5.070 tail_prob 0.750115 Adygei Armenia_EBA 0.699±0.034 Scythian_IA 0.252±0.039 Han 0.049±0.011 chisq 6.230 tail_prob 0.716716 Adygei Caucasus_HG 0.243±0.054 Jordan_EBA 0.342±0.033 Scythian_IA 0.360±0.039 Han 0.055±0.010 chisq 8.370 tail_prob 0.3982 Adygei Armenia_Chalcolithic 0.674±0.674 Caucasus_HG 0.147±0.147 Scythian_IA 0.113±0.113 Han 0.066±0.066 chisq 11.020 tail_prob 0.200589 Adygei Iran_Neolithic 0.221±0.035 Barcin_Neolithic 0.338±0.027 Scythian_IA 0.390±0.032 Han 0.051±0.011 chisq 12.709 tail_prob 0.079515Chalcolithic and Neolithic samples from modern-day Iran, even though very similar to Armenia_EBA and Caucasus_HG, don't appear to produce similarly effective models for the Adygei. That's not to say, however, that the Adygei don't have minor ancient ancestry from the Iranian Plateau. It's possible that they do, but I'm not able to test for it with this methodology.
Thursday, February 23, 2017
It's no secret that Maykop (or Maikop) Culture samples have been sequenced at the Reich and GeoGenetic labs. I don't know when they'll be published, but hopefully soon. Maykop is arguably one of the most fascinating and important archaeological cultures of the Early Bronze Age (EBA), so there's a lot of interest in how these samples will come out in the context of ancient and modern-day Eurasian genetic diversity. It's not an easy thing to predict, because Maykop territory basically straddled two perennially highly differentiated West Eurasian biogeographical zones: Eastern Europe and West Asia. So the question is, was the Maykop population, for its time, Eastern European, West Asian, or a rare example of something in between? If we assume that the Adgyei people of the Northwest Caucasus are largely of Maykop origin, but with various post-Bronze Age admixtures from the steppe and perhaps eastern Asia, which I'd say is not a bad assumption for now, then my prediction is that the Maykop samples will be very similar to the three currently available Armenia_EBA or Kura-Araxes individuals. Consider the following qpAdm models. Armenia_EBA is the key to a tight fit. Barcin_Neolithic and Jordan_EBA help to improve the fit slightly, but also bump up the standard errors. Caucasus_HG does very well alongside Jordan_EBA, but is temporally a less proximate choice than Armenia_EBA.