Haplogroup G-Z1903 is a Y-chromosome (paternal) haplogroup on TheYtree, catalogued with its defining mutations, sample distribution and phylogenetic tree.
| ISOGG name | G2a2b2a1a1c1a1 |
|---|---|
| Defining mutations | 37 |
| Downstream branches | 51 |
| Estimated age | 4,580 years |