Haplogroup I-FGC3618 is a Y-chromosome (paternal) haplogroup on TheYtree, catalogued with its defining mutations, sample distribution and phylogenetic tree.
| ISOGG name | I2a1b1a2b1a2a1 |
|---|---|
| Defining mutations | 2 |
| Downstream branches | 40 |
| Estimated age | 3,400 years |