Genetic Diversity in the Himalayan Populations of Nepal and Tibet

Understanding influences of culture and history on mtDNA variation and population structure in three populations from Assam, Northeast India

“…An exceedingly rare subhaplogroup, M33b1 has only been reported at frequencies <2.2% (Gayden, ; Kong et al, ; Li et al, ). As with M9a1b1, we postulate that the high frequency of M33b1 in the Sonowal Kachari reflects a history of founder effect and subsequent endogamy.…”