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In human mitochondrial genetics, Haplogroup J is a human mitochondrial DNA (mtDNA) haplogroup. Haplogroup J derives from the haplogroup JT, which also gave rise to Haplogroup T. In his popular book ''The Seven Daughters of Eve'', Bryan Sykes named the originator of this mtDNA haplogroup ''Jasmine''. Within the field of medical genetics, certain polymorphisms specific to haplogroup J have been associated with Leber's hereditary optic neuropathy.〔(Piia Serk, Human Mitochondrial DNA Haplogroup J in Europe and Near East, Thesis, Tartu 2004 )〕 ==Origin== Around 45,000 years before present, a mutation took place in the DNA of a woman who lived in the Near East or Caucasus. Further mutations took place in the J line which can be identified as J1a1 (27,000 yrs ago), J2a (19,000 yrs ago), J2b2 (16,000 years ago), J2b3 (5,800 yrs ago), etc. Haplogroup J (along with ‘T’) MtDNA J & T colonised Europe from the Near East in the late Paleolithic & Mesolithic. * However, any statements concerning the geographic origin of this or any other haplogroup are highly speculative and considered by most population geneticists to be 'story telling' and outside the domain of science . Furthermore, inferring close associations between a haplogroup and a specific archaeological culture can be equally problematic. 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 J (mtDNA)」の詳細全文を読む スポンサード リンク
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