Haplogroup K-M9

Origins and distribution

Y-DNA haplogroup K-M9 is an old lineage that arose approximately 47,000-50,000 years ago. Geneticist Spencer Wells had argued that because haplogroup K has a geographically wide distribution, the lineage probably originated near the central part of this range in the Middle East or Central Asia, possibly in Iran or Pakistan.

Basal K* is exceptionally rare and under-researched; while it has been reported at very low frequencies on many continents it is not always clear if the examples concerned have been screened for subclades. Confirmed examples of K-M9* now appear to be most common amongst some populations in Island South East Asia and Melanesia; it is also found in 2% of Italians, with frequencies reaching 8% among the Ladin people. K-M9* was also found in one individual from the Spanish province of Castellón with the surname Ferrer.

Primary descendants of haplogroup LT are L (M20), also known as K1a, and T (M184), also known as K1b.

The descendants of haplogroup K2 include:

• K2a (detected in Paleolithic specimens Oase1 and Ust'-Ishim), the subclades of which include the major haplogroups N and O, and;
• K2b – the ancestor of haplogroups M, P, Q, R, S.

Structure

;Haplogroup K-M9 tree

Omsk Oblast, Russia. (These remains were initially classified, erroneously, as K2*.) haplogroups: • N, which is found mainly in populations across Northern Eurasia (and at lower frequencies in regions including East Asia, Central Asia, Southeast Asia, Anatolia, and Southeast Europe) and; • O, which is now numerically dominant among males from East Asia, Southeast Asia, and the Pacific Islands.

References

References

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