March 18, 2011

Pan-Asian SNP Consortium analysis

The Harappa Ancestry Project tips me about the availability of the Pan-Asian SNP data. I was able to download it and run a quick ADMIXTURE test run on them.


The admixture proportions can be found in the spreadsheet.

8 comments:

Erik said...

There is a group of Han Chinese with 1.7% african admixture, seems very strange

John said...

Wow the first time I have seen australoid in this type of analysis. Would love to see some Papuan and Australian samples in this set.

Annie Mouse said...

Interesting.

The negritos show no australoid or african. They appear to be the dark green South East Asian folk.

Signifiant African in the Philippines too.

pduffy81 said...

The Filipino results are interesting. I was asking my other half about some of them. She says the Ayta, Agta and Ati are Negritos. The filipinos regard them as the original indigenous population of the island chain.

The Tagalog speakers have the lowest australoid admixture. Still quite substanstial at 29.2%, Tagalog is basically the same as Filipino (filipino is a register of Tagalog, language of Manila)

Dienekes, obviously it's too late to add extra to your analysis but if you do run this dataset again you can add DOD326 -- she's filipina specifically Visayan.

pduffy81 said...

Another thing to point out on the Filipino samples is that PI-UI includes Chabacano speakers. This is a Spanish creole, interesting that they have a higher "West Eurasian" component then the other listed "Filipino" ethnicities (Ilocano, Tagalog)

empanada said...

I wonder how to interpret the West Eurasian that occurs in many of the samples, especially the Northeast Asians like Japanese and Koreans (but more in Ryukyuans than Japanese) and Austronesian-speakers. I doubt this is recent if it's so widespread. Is this noise or reflective of deeper connections?

gijoeinfinity said...

I too would love to see the Pan-Asian dataset run against the other SE Asian Dodecad Samples.

If I'm not mistaken, it appears the NAN Melanesian samples were used as the "Australoid" proxy. Normally they are often used for the "Oceanic" reference sample, so this isn't necessarily the first time "Australoid" had been used.

It appears that the Negrito tribes of the Philippines are mostly Australoid and the rest of their admixture being mostly East Asian (probably a result of intermixing with "Malay" Filipinos). The other Filipino samples show a strong mixture of Australoid, but have far more East Asian ancestry than "Southeast Asian". Also interesting to see that the Taiwanese aborigines (Ami, Atayal) closely resembles the admixture amounts of the Filipino Austronesian samples in this run.

kazakh notmongolian said...

There seems to be mistake in this run study.

There is no way filipino are 1/3 Australoiod when other studies shows them as only 1/8 only.