East Asian genetic substructure
Check out the the charts over at Steve Hsu’s site. The author of a forthcoming paper sent him a draft. Since around 2/3 of the population of East Asia resides in China, there would be some value-add in getting many disparate samples from Han groups from all over the country and seeing what the population structure in the nation itself is.
Update: Here’s the paper. They do in fact look at geographic structure in China, but it is at a relatively coarse level. Below the fold is a figure which I’ve reedited a bit for more illustrative power. The plot is across the first two principal components. Unfortunately many of these groups (e.g., Miao, who Americans know as Hmong) are obscure to most, though I’m sure the Xibo’s in the readership wil appreciate my labels. Also, remember that a majority of Chinese Americans are from southern dialect groups and regions. The oldest communities are Cantonese, but most of the recent immigrants are from Fujian, and the Taiwanese are over 90% of Fujian origins themselves (the residual being from all over China due to the post-1949 infux).
Labels: Population genetics
Would be interesting to correlate with genetic structure in rice: http://www.vaviblog.com/rice-domestication-a-different-story/
It is interesting to see that Cambodia is such an outlier. On many of the ancient temples there are large carvings showing Khmer armies marching alongside Chinese armies to fight the people that live in what is now Thailand and Vietnam. The carvings also show scenes of daily life with many Chinese in them.
Or am I reading the graphic wrong?
So, East Asia is just like the recent European genetic graph where the two prime components map almost exactly to a geographical map of Europe?
The Cambodians aren’t really outliers. In comparison some of the Mongols are just as far away from the Chinese as the Cambodians are.