Haplogroup O-F3263 is a Y-chromosome (paternal) haplogroup on TheYtree, catalogued with its defining mutations, sample distribution and phylogenetic tree.
| ISOGG name | O2a2a1a2a1a1a2a1b |
|---|---|
| Defining mutations | 39 |
| Downstream branches | 49 |
| Estimated age | 5,160 years |