Haplogroup O-F923 is a Y-chromosome (paternal) haplogroup on TheYtree, catalogued with its defining mutations, sample distribution and phylogenetic tree.
| ISOGG name | O1b1a1a1a1a1a1a1 |
|---|---|
| Defining mutations | 15 |
| Downstream branches | 156 |
| Estimated age | 4,550 years |