DNA tests show Hainan islanders could be traced back to early Holocene
Hainan Island is located around the conjunction of East Asia and Southeast Asia, and during the Last Glacial Maximum (LGM) was connected with the mainland. This provided an opportunity for the colonization of Hainan Island by modern human in the Upper Pleistocene.
Whether the ancient dispersal left any footprints in the contemporary gene pool of Hainan islanders is in a hot debate.
They found that Hainan islanders showed close relationship with the populations in mainland southern China, especially from Guangxi. Haplotype sharing analyses suggested that the recent gene flow from the mainland might play important roles in shaping the maternal pool of Hainan islanders.
More importantly, haplogroups M12, M7e, and M7c1* might represent the genetic relics of the ancient population that populated this region; and 14 representative complete mtDNA genomes were further sequenced.
Author: Min-Sheng PengJun-Dong HeHai-Xin LiuYa-Ping Zhang
Credits/Source: BMC Evolutionary Biology 2011, 11:46
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