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In human mitochondrial genetics, haplogroup R is a very extended mitochondrial DNA (mtDNA) haplogroup and is the most common macro-haplogroup in West Eurasia. Haplogroup R is a descendant of macro-haplogroup N. Among its descendant haplogroups are B, U (and thus K), F, R0 (and thus HV, H, and V), and the ancestral haplogroup of J and T. ==Origin== As of June 2009, the most recent study dates the origin of haplogroup R to 66.8kya (thousand years ago) with a 95% confidence interval of 52.6-81kya.〔 South Asia lies on the way of earliest dispersals from Africa and is therefore a valuable well of knowledge on early human migration. The analysis of the indigenous haplogroup R lineages in India points to a common first spread of the root haplotypes of M, N, and R along the southern route some 60–70 kya. Haplogroup R has wide diversity and antiquity among varied ethnic status and different language families in South Asia. In Indian western region among the castes and southern region among the tribes show higher haplogroup diversity than the other regions, possibly suggesting their autochthonous status. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Haplogroup R (mtDNA)」の詳細全文を読む スポンサード リンク
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