The putative migratory routes of M9a'b and the distribution of the potentially associated archaeological evidence. Arrows refer to the dispersal direction but do not denote precisely defined geographic routes. The ages of specific haplogroups were based on the mtDNA control region sequences: (a) M9a* lineages in southern China and Southeast Asia; (b) M9a1 in southern China; and (c) M9a1b1 lineages in northeast India, and M9a1b1 and M9a1a2 lineages in the south Himalaya region.
Peng et al. BMC Biology 2011 9:2 doi:10.1186/1741-7007-9-2