Haplogroup R-L366 is a Y-chromosome (paternal) haplogroup on TheYtree, catalogued with its defining mutations, sample distribution and phylogenetic tree.
| ISOGG name | R1a1a1b1a2b3a1a1a1 |
|---|---|
| Defining mutations | 6 |
| Downstream branches | 13 |
| Estimated age | 2,500 years |