In
human genetics, the
Atlantic Modal Haplotype (AMH) or haplotype 15 is a
Y chromosome haplotype of
Y-STR microsatellite variations, associated with the
Haplogroup R1b. It was discovered prior to many of the SNPs now used to identify subclades of R1b and references to it can be found in some of the older literature. It corresponds most closely with subclade R1b1b2a1a [L11].
The AMH is the most frequently occurring haplotype amongst human males in
Atlantic Europe. It is characterised by the following marker
alleles:
- DYS394 14 (also known as DYS19)
A common haplotype within R1b is sometimes called the Atlantic Modal Haplotype, or haplotype 15. It reaches the highest frequencies in the Iberian Peninsula and in Great Britain and Ireland. In the Iberian Peninsula it reaches 70% in Portugal as a whole, more than 90% in NW Portugal and nearly 90% in Galicia (NW Spain), while the highest value is to be found among Spanish Basques. It was discovered prior to many of the SNPs now used to identify subclades of R1b and references to it can be found in some of the older literature. It corresponds most closely with subclade R1b1b2a1a [L11].
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 in the R1b1
subclade.
See also
