Western Atlantic Modal Haplotype (WAMH)

The Atlantic Modal Haplotype or Western Atlantic Modal Haplotype (WAMH) as FamilyTreeDNA calls it is the most common haplotype of men in Western Europe. It is known to be a common 12 Y-STR marker haplotype for many haplogroups, paternal tree branches, in the major R1b haplogroup. In some cases, the match is to a true modal value, in others it is due to haplotype convergence.

For genetic genealogy, its significance has proven with time to be that when you test two or more men for matching, sharing the haplotype on 12 markers is not a reliable indication of a recent common ancestor.

Sources and Resources

Western Atlantic Modal Haplotype (WAMH) – FTDNA Learning Center
Western Atlantic Modal Haplotype – ISOGG Wiki

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