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This project is a meeting place for users who share the T-M70 Y-DNA haplogroup, which means they are related along their paternal lines. Users in this group may want to share their family trees with each other to find overlaps and merge duplicate profiles in order to join or expand the World Family Tree and discover new relatives.

Haplogroup T-L206, also known as haplogroup T1, is a human Y-chromosome DNA haplogroup. The SNP that defines the T1 clade is L206. ... T-L206's sole primary branch, T1a (M70), is believed to have originated about 15,900 – 23,900 BP, in the Levant.

M70 is believed to have originated in Asia after the emergence of the K-M9 polymorphism (45–30 ky) (Underhill et al. 2001a). 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, they are especially prominent in the Fulbe 18%( [Scozzari et al. 1997, 1999])

Mendez et al. (2011) points to an ancient presence for T1a-M70 in Europe may reflect early exiles between the ancient lands of Israel and Babylon. The subclade probably arrived with the very first farmers. This is supported by the recent findings of Haak et al. who discovered several T1a1-CTS880 members in a 7000 years old settlement in Karsdorf, Germany. Autosomal analysis of these skeletal remains show an unusual relationship with modern Southwest Asian populations, reaching close to 10%.

The T1a1 skeletal remains from this settlement were also found to belong to the H mtdna haplogroup, this settlement have the highest frequency of this mtDNA haplogroup 30.4% (7/23) that have been found in any early Neolithic Europe population until now.

A notable member of the T-M184 haplogroup is the third US President, Thomas Jefferson. He reportedly belongs to a subclade of T-M184 which is most commonly found in both the Iberian Peninsula (e.g. Spain) and Egypt. His most distant known ancestor is Samuel Jeffreason [sic], born 11 October 1607 at Pettistree, Suffolk, England, although there is also a widespread belief that the President had Welsh ancestry. While all subclades of T-M184 are rare in Britain, some British males with the surname Jefferson have also reportedly been found to carry T-M184, reinforcing the idea that Thomas Jefferson's immediate paternal ancestry was British and may originate in Sephardic (Spanish) Jewish populations, who have their ultimate origins in the Middle East.