Haplogroup O-ACT520 is a Y-chromosome (paternal) haplogroup on TheYtree, catalogued with its defining mutations, sample distribution and phylogenetic tree.
| ISOGG name | O1b1a1a1a1a1b1a1 |
|---|---|
| Defining mutations | 7 |
| Downstream branches | 93 |
| Estimated age | 5,100 years |