Haplogroup I-A16681 is a Y-chromosome (paternal) haplogroup on TheYtree, catalogued with its defining mutations, sample distribution and phylogenetic tree.
| ISOGG name | I2a1a2b1a1a1a1c |
|---|---|
| Defining mutations | 1 |
| Downstream branches | 1 |
| Estimated age | 1,450 years |