Haplogroup G-Y8903 is a Y-chromosome (paternal) haplogroup on TheYtree, catalogued with its defining mutations, sample distribution and phylogenetic tree.
| ISOGG name | G2a2b2a1a1b1a1b |
|---|---|
| Defining mutations | 2 |
| Downstream branches | 4 |
| Estimated age | 3,600 years |