(Last Update: Oct 22)
Here is a teaser from my ongoing ADMIXTURE experiments. I have assembled a nice set of Eurasian populations, and this time I will continue increasing K until the Bayes Information Criterion maxes out.
I had previously used BIC to successfully choose K in my craniometric analysis of world populations. I am now at K=7 and it keeps on rising! Either it will stop or my computer will burn out doing Quasi-Newton iterations.
Onto the teaser: I'll only say that "People" are the 12 Genomes Unzipped individuals; I will leave their individual proportions a mystery - for now.
UPDATE (Oct 21):
Here are the K=8 results. I've added some more populations. The next step is to integrate HapMap data with HGDP-CEPH and the Behar et al. dataset. Stay tuned.
I've decided to present the data as population averages, as this is much more readable, especially as the number of individuals grows.
In this run, one of the clusters (purple) became associated with north Mongoloids (Yakuts, and partially Mongols and Daur), whereas Han are mostly in the green component. Notice that Yakut, Uzbeks, Chuvash, and Turks (all Turkic populations) are predominantly in the north cluster as far as their Mongoloid component is concerned, as expected.
UPDATE II (Oct 22):
Here are results for K=9. The addition of Maasai (MKK) has revealed the east African component which they share with Ethiopians; the latter also have a significant West Asian component.
For lack of a better term, I decided to call the lime component "Sardinian", as it is dominant in that population, but it is clearly reflective of something much broader.