The genetic admixture in Tibetan-Yi Corridor
Hong-Bing Yao1, Senwei Tang2, Xiaotian Yao2
1Key Laboratory of Evidence Science of Gansu Province, Gansu Institute of Political Science and Law, Lanzhou, 730070, China.
Genetic studies reveal the Tibetan-Yi Corridor facilitated population migrations onto the Tibetan Plateau. This region
Area of Science:
- Population genetics
- Human migration studies
- Tibetan Plateau anthropology
Background:
- The Tibetan-Yi Corridor is crucial for Tibeto-Burman population origins and Tibetan Plateau peopling.
- Limited genetic data exists for the northern Tibetan-Yi Corridor populations.
Purpose of the Study:
- To investigate the genetic history of populations in the northern Tibetan-Yi Corridor.
- To understand migration patterns and admixture in this key region.
Main Methods:
- Collected blood samples from Tibetan and Han Chinese individuals in Gansu province.
- Genotyped approximately 600,000 genome-wide single nucleotide polymorphisms (SNPs).
Main Results:
- Populations in the Corridor exhibit admixture from Plateau Tibetans and lowland East Asians.
- Tibetan and Han Chinese groups in the north show West Eurasian admixture dating back 600-900 years.
Conclusions:
- Significant population migrations occurred from lowlands onto the Tibetan Plateau via the Corridor.
- This migration shaped the genetic structure of Tibeto-Burman speaking populations since the Neolithic era.
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