Visualizing an ADMIXTURE run as a polygonal diagram

[Komintasavalta]

Would you say Russians are closer to Tajiks than to Armenians? Tajiks are 30-40% BA Steppe whereas Armenians have almost none. But on the other hand, Tajiks have a lot more non-Caucasoid admixture than Armenians who are pretty much 98-100% Cauc.
And please don't use those extreme outliers like Pinega, those are just a few thousand people and most Russians are not like them.

Based on FST distances between samples in 1240K+HO, Russians are closer to Tajiks (.0111) than to Armenians (.0139).

Central Asian populations like Tajiks are mixed populations with a large effective population size, so they're the opposite of drifted, and they have relatively low FST and f2 distance to other populations. Russians are also closer to Tajiks than to Basques (.0120), even though on G25 Russians are much closer to Basques, but I think it's because FST is more sensitive to drift than G25.

Both North Russians and South Russians are overrepresented among the Russian samples, but the average latitude of the Russian samples is 56.6, which is almost the same as the latitude of the center of population of Russia. However 22 out of 71 of the samples are still from Arkhangelsk Oblast, which might skew the results a bit.



Here's the FST matrix as a CSV file: https://pastebin.com/raw/QrySXDRp. The FST values are multiplied by million.

[vbnetkhio]

Here's population averages from the European ADMIXTURE run, where each population is linked to its three closest neighbors.

I'm happy that Finns are connected to Kalmyks by only four links: first from Finnish to Russian_Archangelsk_Pinezhsky, then to Besermyan, then to Bashkir, and then to Kalmyk.

Could you do an unsupervised admixture run with modern Siberians and Finno-Ugrics and non-SG ancient samples, measuring the mesolithic/neolithic components like ane,whg,etc? Sorry if you already did it, i can't find it.