The Original “Atlantic
Modal Haplotype” (
The “Atlantic Modal
Haplotype” was a phrase coined by population geneticists to refer to the most
common haplotype in
The “
Once Family Tree
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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:
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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:
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We can add the next 30
markers for the 67-marker SWAMH:
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