T - The Y-DNA Haplogroup T (former K2) Project- Background

Background

This project welcomes anyone who has been predicted or SNP-tested as Y-Haplogroup T.
Haplogroup T (known as Haplogroup K2 until May 2008) is defined by SNP M184 and is found at low frequencies in the Middle East, Europe and North Africa. Most lines in T belong to subgroup T1 defined by SNP M70 which until March 2011 was considered equivalent to M184.
T1 in turn divides into 2 major subgroups T1a (defined by SNP PS21 aka L162) and T1b (defined by SNP L131).

Thomas Jefferson is believed to have belonged to haplogroup T, based on tests carried out on individuals sharing his paternal line.
For more information on T and the Jefferson family link see:
http://www3.interscience.wiley.com/cgi-bin/abstract/114108057/ABSTRACT
and
http://news.bbc.co.uk/1/hi/sci/tech/6332545.stm