Haplogroup J-CTS9721 is a Y-chromosome (paternal) haplogroup on TheYtree, catalogued with its defining mutations, sample distribution and phylogenetic tree.
| ISOGG name | J1a2a1a2~ |
|---|---|
| Defining mutations | 4 |
| Downstream branches | 3,444 |
| Estimated age | 8,200 years |