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Haplogroup B (mtDNA) : ウィキペディア英語版 | Haplogroup B (mtDNA)
In human mitochondrial genetics, haplogroup B is a human mitochondrial DNA (mtDNA) haplogroup. ==Origin== Haplogroup B is believed to have arisen in Asia some 50,000 years before present. Its ancestral haplogroup was haplogroup R. Its greater variety is in China. It is conspicuous that haplogroup B may have its earliest diversification in southern China and/or Southeast Asia.〔Yong-Gang Yao et al. 2001, (Phylogeographic Differentiation of Mitochondrial DNA in Han Chinese ) Am J Hum Genet. 2002 March; 70(3): 635–651〕
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