Haplogroup I-Y19657 is a Y-chromosome (paternal) haplogroup on TheYtree, catalogued with its defining mutations, sample distribution and phylogenetic tree.
| ISOGG name | I2a1a1a1a2c1a1b~ |
|---|---|
| Defining mutations | 4 |
| Downstream branches | 2 |
| Estimated age | 1,880 years |