Haplogroup I-S23897 is a Y-chromosome (paternal) haplogroup on TheYtree, catalogued with its defining mutations, sample distribution and phylogenetic tree.
| ISOGG name | I2a1b1a2a1a1a~ |
|---|---|
| Defining mutations | 2 |
| Downstream branches | 15 |
| Estimated age | 4,400 years |