АвторТема: Ancestry of the Iban Is Predominantly Southeast Asian: Genetic Evidence from Aut  (Прочитано 1782 раз)

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Ancestry of the Iban Is Predominantly Southeast Asian: Genetic Evidence from Autosomal, Mitochondrial, and Y Chromosomes // PLoS ONE 6(1): e16338. doi:10.1371/journal.pone.0016338 Published: January 31, 2011

Simonson et al.

Humans reached present-day Island Southeast Asia (ISEA) in one of the first major human migrations out of Africa. Population movements in the millennia following this initial settlement are thought to have greatly influenced the genetic makeup of current inhabitants, yet the extent attributed to different events is not clear. Recent studies suggest that south-to-north gene flow largely influenced present-day patterns of genetic variation in Southeast Asian populations and that late Pleistocene and early Holocene migrations from Southeast Asia are responsible for a substantial proportion of ISEA ancestry. Archaeological and linguistic evidence suggests that the ancestors of present-day inhabitants came mainly from north-to-south migrations from Taiwan and throughout ISEA approximately 4,000 years ago. We report a large-scale genetic analysis of human variation in the Iban population from the Malaysian state of Sarawak in northwestern Borneo, located in the center of ISEA. Genome-wide single-nucleotide polymorphism (SNP) markers analyzed here suggest that the Iban exhibit greatest genetic similarity to Indonesian and mainland Southeast Asian populations. The most common non-recombining Y (NRY) and mitochondrial (mt) DNA haplogroups present in the Iban are associated with populations of Southeast Asia. We conclude that migrations from Southeast Asia made a large contribution to Iban ancestry, although evidence of potential gene flow from Taiwan is also seen in uniparentally inherited marker data.

http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0016338

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Re: Ancestry of the Iban Is Predominantly Southeast Asian: Genetic Evidence from Aut
« Ответ #1 : 20 Февраль 2011, 09:13:44 »
Это уже понятно, что N им китайцы сниповать запретили.

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Re: Ancestry of the Iban Is Predominantly Southeast Asian: Genetic Evidence from Aut
« Ответ #2 : 24 Февраль 2011, 07:55:48 »
This study is not too useful in someway,for example,what branches of O3 the Ibans have?only O3 can't prove anything,if the Ibans have O3a3c,then clearly those O3a3c came from mainland China,not Taiwan.Sameway goes for their O2a,they just din't do deep test
Ibans have 11.11% mt-Z,that's really amazing

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Re: Ancestry of the Iban Is Predominantly Southeast Asian: Genetic Evidence from Aut
« Ответ #3 : 24 Февраль 2011, 09:27:22 »
То есть, очередное подтверждение предполагаемых трёх больших волн в регион? Аборигены, некие древние сундалендцы и австронезийцы?

 

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