Tibeto-Burman communities were pre-historic Himalayan settlers, and their East Asian ancestry can be traced back to Neolithic immigration, mostly from Tibet around 8 KYA (Kilo Years Ago), says a genetic study of the population. The study, which reconstructs the maternal origins of prehistoric Himalayan populations, helps explain the genetic drift, endogamy, admixture, isolation, and natural selection that have contributed to genetic diversity among Nepalese population and sheds light on migration events that have brought most of the East Eurasian ancestry to the present-day Nepalese population.
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