Haplogroup J (mtDNA)

Haplogroup J
Possible time of origin45,000 years before present
Possible place of originWest Asia/Middle East
AncestorJT
DescendantsJ1, J2
Defining mutations295 489 10398 12612 13708 16069

Haplogroup J is a human mitochondrial DNA (mtDNA) haplogroup. The clade derives from the haplogroup JT, which also gave rise to haplogroup T. Within the field of medical genetics, certain polymorphisms specific to haplogroup J have been associated with Leber's hereditary optic neuropathy.

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