Global25 Modelling of SE Asians. Noticeable AASI and West Eurasian (Genetic Legacy of Indian Empire) – Page 2 – Anthropology, Population Genetics & Human Evolution

ZeXsY(PMP23) · 2019-07-03T20:53:47Z

Here are the following Global 25 models for SE Asians. Pretty notable amounts of AASI and Western Eurasian ancestry. Seems like Ancient India left considerable genetic influence in the region:these models, I will use Iranian Mazandarani (although they might contain very tiny amounts of AASI as well) and other Western Eurasian populations and Simulated AASI sources instead of South Asians to model the SE Asians. This is because I want to gauge the actual amount of AASI and Western Eurasian ancestry in SE Asians. However, it does indicate that the Indian genetic influence in SE Asia is genuine and not just AASI or Negrito-related affinity.Note 1: the fact that Iranian Mazandarani is used in these models does not mean that SE Asians actually have Iranian ancestry. Instead, it is utilized as a proxy for Western Eurasian admixture into these populations.Note 2: I did not create models for other SE Asians like the Vietnamese, Murut, Dusun etc because they don't have any Western Eurasian. In the case of the Pinos (Luzon and Vizayan samples), I also did not model them because they seem to have very little to almost none Indian ancestry. So if the Pinos have any West Eurasian, it mostly comes from Iberian colonization or Arabs (in the case of Pino Muslims in the southern Phils) rather than mixing with Indians.Note 3: there are no Laotians in Global 25, but I suspect they will be like the Dai and Vietnamese, which is basically zero West Eurasian admix.Let's Begin!!!..... Burmese: They are around 7% West Eurasian and 10% AASI. When you combined them, you get around 17% South Asian admix. I wonder whether is it North or South Indian ancestry, what caste in their case. From what I saw on Gedmatch results, I thought the Burmese would be more Indian admixed than this. I guess some of their South Asian admix is actually AASI/Negrito-related affinity.Yi is used as source for the Tibeto-Burman ancestry of the Burmese. Burmese are a lot more northern-shifted than other SE Asians who mostly preferred Dai (Tai-Kradai population from Southern China) or Igorot (tribe from the Phils)"sample": "Burmese:Average","fit": 1.4199,"Yi": 68.33,"LAO_LN_BA": 15,"Simulated_AASI": 10,"Iranian_Mazandarani": 6.67,Thai: has the most Western ancestry of all the SE Asians. The samples here are around 9% Western Eurasian (although might be slightly less if Iranian Mazandarani contains tiny amounts of AASI) and 7% AASI. Combined that will get around 16% South Asian which surprised as I thought they would get more Indian ancestry than that. Again, am wondering if their Indian ancestry is North or South, Upper or lower caste?"sample": "Thai:Average","fit": 1.6814,"Dai": 70.83,"LAO_LN_BA": 13.33,"Iranian_Mazandarani": 9.17,"Simulated_AASI": 6.67,However, the distance fits for the Thai get better when you add Han in to the mix (There were historical migrations into Siam/Thailand from Southern China in large numbers. A lot of Chinese intermarried with the locals to the point that as many as 40% of Thais could have a partial Chinese ancestor in their bloodline)This time the Western Eurasian in Thai average decrease from 9 to 8%. Now the Thai have around 15% South Asian when combining the Iran Mazandaran and Simulated AASI. But the Thai also have almost 20% Chinese ancestry."sample": "Test1:Thai","fit": 1.2433,"Dai": 40.83,"LAO_LN_BA": 25.83,"Han": 18.33,"Iranian_Mazandarani": 8.33,"Simulated_AASI_Averaged": 6.67,Cambodian: they have around 3% Western and 4% AASI here. Combining these two would get around 7% Indian. They have the lowest West Eurasian and AASI ancestry among the SE Asians which sort of make sense as they are geographically rather distant from the Indian subcontinent. Also their Indian ancestry is very ancient; they don't seem to get continuous South Asian gene flows like the Burmese. In their case, their South Asian ancestry is most likely South Indian as their architecture is most similar to those of South India."sample": "Cambodian:Average","fit": 1.6315,"Dai": 55.83,"LAO_LN_BA": 36.67,"Simulated_AASI": 4.17,"Iranian_Mazandarani": 3.33,Malay: they have around 6% West Eurasian and 6% AASI ancestry. Combining that would get them at around 12% South Asian. I thought their Indian ancestry would be higher as Malaysia received a lot of South Indian migrants and several of them seem to assimilated or intermarried with the Malays. This makes me I speculated that a huge amount if not most of their South Asian ancestry is from South India."sample": "Malay:Average","fit": 1.5848,"Malaysia_LN": 55,"Igorot": 33.33,"Iranian_Mazandarani": 5.83,"Simulated_AASI": 5.83,Some thoughts:-As you can see here, the Burmese seem to have the highest South Asian and the Cambodian have the lowest. However in terms of West Eurasian ancestry, the Thai have the highest and again, the Cambodians have the lowest.-These models show that the South Asian ancestry in a lot of SE Asian populations are authentic and not just AASI/Negrito-related affinity. This is the great gene...

Topic starter

Here are some models for Thai individual samples. I choose the four most West Eurasian-shifted Thai individuals. I am speculating that some Thai individual samples are from Southern Thailand close to Malaysia because they are scoring some Malaysia_LN. All of them also have some Han Chinese ancestry which reflect the historical massive migration of Chinese migrants from South China into Thailand, which a lot have assimilated and intermarried with the locals.

Thai DCH002: Interesting this individual seem to be around 20-21% South Asian, being mostly Gujarati+South Indian (represented by North Kannadi) and some North Indian/Paki admixture (represented by Ror from Haryana)

"sample": "Test1:Thai_-_DCH002",
"fit": 1.7746,
"Htin_Mal": 34.17,
"Han": 22.5,
"Dai": 10,
"Malaysia_LN": 10,
"Gujarati": 8.33,
"North_Kannadi": 7.5,
"Ror": 5,
"Igorot": 2.5,
"LAO_LN_BA": 0,

Now compare to the West Eurasian score (using Sarazm and Yamnaya BGR): this Thai individual has around 12% West Eurasian ancestry. So looks like the West Eurasian comes from South Asian ancestry (mostly Gujarati+South Indian+some Ror in this case along with AASI which represented the indigenous part of South Asians). Also I have feeling this sample is from Southern Thailand as it scores around 11% Malaysia_LN.

"sample": "Test1:Thai_-_DCH002",
"fit": 1.8391,
"Htin_Mal": 27.5,
"Han": 21.67,
"Dai": 16.67,
"Malaysia_LN": 10.83,
"Simulated_AASI_Averaged": 10,
"TJK_Sarazm_Eneolithic": 5.83,
"Yamnaya_BGR": 5.83,
"Igorot": 1.67,
"LAO_LN_BA": 0,

Thai DCH008: This sample have around 12% Chinese (represented by Han) admixture. This sample is around 20% South Asian ancestry. Unlike the first individual, this sample seem to be more South Indian (North Kannadi) followed by Gujarati and Northwest Indian/Pakistani-like (Ror) admixture.

"sample": "Test2:Thai_-_DCH008",
"fit": 2.1514,
"Dai": 23.33,
"Htin_Mal": 23.33,
"Han": 11.67,
"LAO_LN_BA": 10,
"Igorot": 8.33,
"North_Kannadi": 8.33,
"Gujarati": 5.83,
"Ror": 5.83,
"Malaysia_LN": 3.33,

Now compare the South Asian score to the West Eurasian (Sarazm+Yamnaya BGR) amount: this Thai is scoring around 12% West Eurasian ancestry. It makes me wonder if most of the West Eurasian comes from the South Asian ancestry this individual is scoring. Also this individual seems to score minor Igorot (Austronesian hill tribe from Phils) admixture which surprises me a bit. It makes me wonder where in Thailand the results are from.

"sample": "Test2:Thai_-_DCH008",
"fit": 2.217,
"Dai": 27.5,
"Htin_Mal": 21.67,
"Han": 10.83,
"LAO_LN_BA": 10.83,
"Simulated_AASI_Averaged": 8.33,
"Igorot": 7.5,
"TJK_Sarazm_Eneolithic": 7.5,
"Yamnaya_BGR": 4.17,
"Malaysia_LN": 1.67,

Thai DCH006: this individual has around 17-18% South Asian ancestry and most of it seems to be Gujarati+Ror followed by South Indian-like (North Kannadi) affinity. This individual also have the smallest Han admixture among all the four Thai samples.

"sample": "Test1:Thai_-_DCH006",
"fit": 1.9371,
"Htin_Mal": 45,
"Dai": 15,
"Malaysia_LN": 9.17,
"Han": 7.5,
"Gujarati": 6.67,
"Ror": 6.67,
"LAO_LN_BA": 5.83,
"North_Kannadi": 4.17,
"Igorot": 0,

Now compare the South Asian score to the West Eurasian score of the same individual. This Thai (Thai DCH006) has around 10% West Eurasian ancestry (Sarazm+Yamnaya BGR) and also 7.5% AASI (which is also likely come from South Asian or Negrito ancestry) which could correlated with the 17-18% South Asian affinity they are scoring

sample": "Test1:Thai_-_DCH006",
"fit": 2.0754,
"Htin_Mal": 38.33,
"Dai": 15,
"Malaysia_LN": 15,
"Han": 10,
"Simulated_AASI_Averaged": 7.5,
"TJK_Sarazm_Eneolithic": 5.83,
"LAO_LN_BA": 4.17,
"Yamnaya_BGR": 4.17,
"Igorot": 0,

Thai DCH010: the fourth sample has around 20% South Asian admixture (mostly Gujarati+South Indian followed by minor NW Indian/Pakistani aka Ror-like ancestry). Also this sample has around 15% Han Chinese admix.

"sample": "Test2:Thai_-_DCH010",
"fit": 1.7457,
"Htin_Mal": 27.5,
"Dai": 25.83,
"Han": 15,
"Malaysia_LN": 10.83,
"Gujarati": 8.33,
"North_Kannadi": 7.5,
"Ror": 4.17,
"Igorot": 0.83,
"LAO_LN_BA": 0,

Now compare the South Asian score to the West Eurasian and AASI score: this individual has around 11% West Eurasian and 9% AASI ancestry. I think this really correlates with the 20% South Asian admixture this Thai is scoring. Am also wondering where in the country this result is from.

"sample": "Test2:Thai_-_DCH010",
"fit": 1.8299,
"Dai": 30,
"Htin_Mal": 30,
"Han": 13.33,
"Simulated_AASI_Averaged": 9.17,
"Malaysia_LN": 6.67,
"Yamnaya_BGR": 5.83,
"TJK_Sarazm_Eneolithic": 5,
"Igorot": 0,
"LAO_LN_BA": 0,

Posted : 03/07/2019 8:56 pm