This group is associated with the YDNA Haplogroup R1b-U106 (S21/U106+) Research Group at Family Tree DNA. (Our website is at www.familytreedna.com/public/U106/.) It is open to all members of that project, as well as genetic genealogists and population geneticists who are interested in discovering more about the R1b-M269 subclade defined by the U106 SNP, also known as S21.

Population geneticists have established over the last couple of decades that the largest haplogroup among men of European ancestry is R1b-M269. In the last three years, scientific studies and test results at Ethnoancestry and Family Tree DNA have indicated that the subclade defined by S21/U106 (currently called R1b1b2g by YCC and R1b1b2a1 by ISOGG) probably represents about 25% of R1b-M269 men.

This group will discuss theories about the geographic origin and current day distribution of R1b-S21/U106 and how it relates to the family tree research of members. This group is also a place to share genealogy research and possibly make connections with distant cousins, both in genealogical and deep ancestry timeframes.