Everything about Haplogroup T Y-dna totally explained
Haplogroup T (M70, M184, M193, M272) is a
human Y-chromosome DNA haplogroup. From 2002 to 2008, it was known as
Haplogroup K2.
Origins
"K2-M70 is believed to have originated in Asia after the emergence of the K-M9 polymorphism (45–30 ky) (Underhill et al. 2001
a). As deduced from the collective data (Underhill et al. 2000; Cruciani et al. 2002; Semino et al. 2002; present study), K2-M70 individuals, at some later point, proceeded south to Africa. While these chromosomes are seen in relatively high frequencies in Egypt, Oman, Tanzania, Ethiopia, and Morocco, they're especially prominent in the
Fulbe (18% [Scozzariet al. 1997, 1999]), presenting the highest concentration of this haplogroup found so far." (J. R. Luis et al., "The Levant versus the Horn of Africa: Evidence for Bidirectional Corridors of Human Migrations")
Distribution
Haplogroup T is present at low levels throughout
Africa,
Southwest Asia,
South Asia, and, at an even lower level, throughout
Southern Europe. Haplogroup T-M70 has been detected in 10.4% (21/201) of
Somali, 8.3% (10/121) of
Omani Arab, 8.2% (12/147) of
Egyptian, and 7.2% (10/139) of
Iraqi males.
Other regions that have been found to contain a significant proportion of haplogroup T individuals include
South India (18/305 or 5.9%),
United Arab Emirates (8/164 or 4.9%),
Ethiopia (6/126 or 4.8%), the
Wairak Bantu in
Tanzania (2/43 or 4.7%),
East India (14/367 or 3.8%), South
Iran (4/117 or 3.4%),
Turkey (13/523 or 2.5%), and the
Iberian Peninsula (16/629 or 2.5%). According to data from commercial testing,
Italy may have the highest frequency of haplogroup T in Europe, with as many as 3.9% of Italian males belonging to this haplogroup. In Africa, however, the major cluster remains among the Fulbe at 18% (Scozzari et al. 1997, 1999). Approximately 3% of
Sephardi Jews and 2% of
Ashkenazi Jews belong to haplogroup T.
The distribution of haplogroup T in most parts of Europe is spotty or regionalized; for example, haplogroup T was found in 1.7% (10/591) of a pool of six samples of males from southwestern
Russia, including
Russians from
Roslavl,
Livny, Pristen, Repievka, and
Belgorod and
Kuban Cossacks from
Adygea, but this haplogroup was completely absent from a pool of eight samples totalling 637 individuals from the northern half of European Russia.
Among populations of India, haplogroup T has been found to be particularly common among the
Bauri, a
Dalit caste of fishermen in
East India, and the
Kurru (also known as
Yerukula), a
Dravidian tribe of
South India.
Famous members
A famous member of the T haplogroup is
Thomas Jefferson; his Y-chromosomal complement received prominence through the
Sally Hemings controversy.
Further Information
Get more info on 'Haplogroup T Y-dna'.
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