The Original “Atlantic
Modal Haplotype” (
The “Atlantic Modal
Haplotype” was a phrase coined by population geneticists to refer to the most
common haplotype in
Once Family Tree
Since, strictly speaking, the term Atlantic Modal Haplotype referred just to the six-marker haplotype, FTDNA invented the name “Western Atlantic Modal Haplotype” for this 12-marker haplotype.
The “Super Western Atlantic Modal Haplotype” (SWAMH)
As more markers became available for testing, particularly the 25-, 37-, and 67-marker panels from FTDNA, it became possible to determine larger R1b modal haplotypes. Here is the R1b modal haplotype at 25 markers:
However, there could be a difference between the most common haplotype in the database and the artificial haplotype above that is composed of the modal values on each individual marker.
For example, on
When this same exercise is
repeated at 37 markers, there are no exact matches to the 37-marker modal
values in the Y-Search database, even omitting
Here is the 37-marker Super Western Atlantic Modal Haplotype, which (as mentioned above) probably does not yet even exist in FTDNA’s database:
We can add the next 30 markers for the 67-marker SWAMH: