Haplogroup O-F1123 is a Y-chromosome (paternal) haplogroup on TheYtree, catalogued with its defining mutations, sample distribution and phylogenetic tree.
| ISOGG name | O2a2b1a1a1a1a1b1a1a1a |
|---|---|
| Defining mutations | 31 |
| Downstream branches | 70 |
| Estimated age | 3,000 years |