Haplogroup O-Z25398 is a Y-chromosome (paternal) haplogroup on TheYtree, catalogued with its defining mutations, sample distribution and phylogenetic tree.
| ISOGG name | O2a2a1a2a1a1a2 |
|---|---|
| Defining mutations | 5 |
| Downstream branches | 205 |
| Estimated age | 10,740 years |