In human genetics, the Atlantic Modal Haplotype (AMH) is a Y-chromosome haplotype within the R1b haplogroup.
The AMH is the most frequently occurring haplotype amongst human males in Atlantic Europe. It is characterised by the following marker alleles:
- DYS388 12
- DYS390 24
- DYS391 11
- DYS392 13
- DYS393 13
- DYS394 14 (also known as DYS19)
One mutation in either direction, would be AMH 1.15+. The AMH 1.15 set of haplotypes is also referred to as the Atlantic Modal Cluster or AMC. Often 1.15+ would be a haplogroup 1 (H1), but not always.