Haplogroup X (mtDNA)
| Haplogroup X | |
|---|---|
| Possible time of origin | ca. 45,000–20,000 years ago |
| Possible place of origin | Middle East |
| Ancestor | N |
| Descendants | X1, X2 |
| Defining mutations | 73, 7028, 11719, 12705, 14766, 16189, 16223, 16278 |
Haplogroup X is a human mitochondrial DNA (mtDNA) haplogroup. It is found in North America, Europe, Western Asia, North Africa, and the Horn of Africa.
Haplogroup X diverged from haplogroup N roughly 30,000 years ago (just prior to or during the Last Glacial Maximum). It is in turn ancestral to subclades X2 and X1, which arose c.16-21 thousand and c.14-24 thousand years ago, respectively.