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Thread: Recent developments in aDNA and Interpretation in China

  1. #91
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    Last edited by Hando; 04-21-2017 at 04:12 PM.

  2. #92
    Registered Users

    I would like to share a result from Davidski's recent IBD data dump, which can be found here. Kudos to Matt who created population averages from the raw data, here.

    Apart from the fascinating patterns for Uralics and Turkics, described here, there is a fascinating pattern for Han Chinese vs Koreans as well.

    Han-Korean comparison

    Koreans are very similar to Northern Han Chinese autosomally which you can see from the close placement of all populations close to the 1:1 relationship line. On the Korean side except for a slight signal with Ulchi (a Tungusic Hunter-gatherer minority to their north in the Armur Basin, which evinces substantial continuity with the Devil's Gate genomes) and Japanese, there is no signal. More interesting is the Han Chinese, which show unequivocal excess haplotype sharing with Yi, Naxi and Tujia which are Sino-Tibetan groups in the Tibetan foothills and Sichuan in Southwest China, who are very "North Asian" autosomally (less so for Tujia) despite their southern location, plus quite a bit of the "Sherpa" highland component. Han also share with She and Miao, which are Hmong-Mien-speaking ethnic groups, from Central-Southern China.

    Previously in this thread, there was a lot of debate between the "autochthonists" supporting native North Chinese derivation of Sino-Tibetan languages and the Sinitic ethnicities without post-neolithic replacements and "invasionists" postulating a post-Neolithic, recent movement from the West or Southwest, from a Tibeto-burman homeland that lies closer to the Tibetan plateau and associated ranges and foothills, on which most Tibetoburmans except for Chinese live today. It was pointed out that the funerary rites of the Erlitou and Shang more generally--the first state societies or "complex chiefdoms" in Northern China, were derived from Meishan and associated cultures in South and Southwest China. Also, the population closest to Northern Chinese today are the Tujia from Sichuan, and the Northern Chinese carry a clear and undeniable signal of "highland" ancestry at 5%, which is ubiquitous among Tibetoburmans e.g. Naxi at 20%, Tibetans at 35%.

    Comparing Han to Burmese:

    The Han share increased haplotypes with Japanese, Koreans, Hmong-Miens and Austronesians, and its the Burmese who now share more with the Tibetoburmans.

    These interesting patterns are consistent with scenario where North China was populated by a generalised East Asian population with increased affinities to Japanese and Koreans (i.e. more "Northern") and Austronesians (more "Eastern"), with Han Chinese being a result of a pulse of admixture from Naxi-like Tibetoburmans introducing both Tibetoburman ancestry and increased Hmong ancestry from Southwest and South-Central China, coming North. Its quite interesting to see these patterns in IBD sharing. geographical distance probably is not the factor here (if it was, why SW China specifically and not SE China? Why Tibetoburman groups at the top for Han, who actually have more interaction with Hmong Miens historically? etc.)
    Last edited by Ryukendo; 08-07-2017 at 02:12 AM.
    Quoted from this Forum:

    "Which superman haplogroup is the toughest - R1a or R1b? And which SNP mutation spoke Indo-European first? There's only one way for us to find out ... fight!"

  3. The Following 6 Users Say Thank You to Ryukendo For This Useful Post:

     Agamemnon (08-07-2017), fished (08-07-2017), Hando (08-07-2017), Inigo Montoya (08-07-2017), parasar (08-07-2017), Pribislav (08-07-2017)

  4. #93
    Registered Users

    Han_NChina vs Yi. Latter's definitely more Tibetan but not Austronesian etc.

  5. The Following 3 Users Say Thank You to Shaikorth For This Useful Post:

     parasar (08-07-2017), Pribislav (08-07-2017), Ryukendo (08-07-2017)

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