A wikipedia of Dr. D'Adamo's research


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In human genetics, Haplogroup K (M9) is a Y-chromosome haplogroup. It first appeared approximately 40,000 years ago in Iran or southern Central Asia. Today, haplogroup K and its descendant haplogroups are the patrilineal ancestors of most of the people living in the Northern Hemisphere, including most Europeans, many Indians, and almost all Asians.

This haplogroup is a descendant of haplogroup F* (M89). Its descendant haplogroups are L (M20), [Haplogroup M (Y-DNA)? M] (M4), [Haplogroup N (Y-DNA)? N] (LLY22G), O (M175), P (M45) (and P's descendants Q and [Haplogroup R (Y-DNA)? R]).

Its subgroup K2 (M70) is present at a low level throughout Africa, Asia, and the Middle East. A famous member of the K2 haplogroup is Thomas Jefferson; his Y-chromosomal complement received prominence through the Sally Hemings controversy.





The Complete Blood Type Encyclopedia is the essential desk reference for Dr. D'Adamo's work. This is the first book to draw on the thousands of medical studies proving the connection between blood type and disease.

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