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Friday, September 20, 2013

Multidimensional views of South Asia, West Asia and Eastern Europe


Individual IDs from the main PCAs (eigenvectors 1 & 2) can be seen on the PDF images here: 1, 2, 3.


See also...

A multidimensional view of Europe + West Asia

PCA of the world

Thursday, September 5, 2013

A multidimensional view of East Asia


Asia isn't the focus of my project, but I thought many readers would find these PCA interesting:


Basically, there are three main poles of genetic variation on these plots: Northeast Siberian (Koryaks and Chukchi), East Asian (Japanese and Korean) and Southeast Asian (Malayan).

Overall, the Northeast Siberians appear to be the most distinct group, and that's because they're more closely related to some Amerindians (like Greenlanders) than even other Siberians. Interestingly, the two Koreans cluster firmly with the Japanese across the first two PCs, but are clearly separated from them in PC 4.

It's also worth noting that the Han Chinese sample from Beijing (from the HapMap project) doesn't look particularly homogenous, with some individuals overlapping with the Japanese and others with the Vietnamese.

See also...

PCA of the world

Tuesday, September 3, 2013