Haplogroup O-Y137081 is a Y-chromosome (paternal) haplogroup on TheYtree, catalogued with its defining mutations, sample distribution and phylogenetic tree.
| ISOGG name | O1a1a1a1a1a1a7a |
|---|---|
| Defining mutations | 8 |
| Downstream branches | 12 |
| Estimated age | 1,440 years |