Haplogroup J | |
---|---|
Possible time of origin | 45,000 years before present |
Possible place of origin | Western Asia, Near East, the Caucasus |
Ancestor | JT |
Descendants | J1, J2 |
Defining mutations | 295 489 10398 12612 13708 16069[1] |
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.[2]