0017世界＠名無史さん
2018/07/22(日) 23:16:25.190https://egg.5ch.net/test/read.cgi/scienceplus/1531460749/28
The prehistoric peopling of Southeast Asia
http://science.sciencemag.org/content/361/6397/88
Abstract
The human occupation history of Southeast Asia (SEA) remains heavily debated.
Current evidence suggests that SEA was occupied by Hoabinhian hunter-gatherers until ~4000 years ago,
when farming economies developed and expanded, restricting foraging groups to remote habitats.
Some argue that agricultural development was indigenous; others favor the “two-layer” hypothesis that posits a southward expansion of farmers giving rise to present-day Southeast Asian genetic diversity.
By sequencing 26 ancient human genomes (25 from SEA, 1 Japanese J?mon), we show that neither interpretation fits the complexity of Southeast Asian history:
Both Hoabinhian hunter-gatherers and East Asian farmers contributed to current Southeast Asian diversity,
with further migrations affecting island SEA and Vietnam. Our results help resolve one of the long-standing controversies in Southeast Asian prehistory.
