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This project is a meeting place for users who share the R-CTS3777 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.
CTS3777 is a subclade of L-47, which is a subclade of U-106, which is a subclade of R1b (with many intervening subclades). The L48 project is a superclade of this one.
The ISOGG 2016 haplotree assigns CTS3777 the notation R1b1a1a2a1a1c2b1b4. This name is given for all of S3251.2, CTS3777/S6932, CTS11549/S3894, S6924, S18461 - ISOGG has not recognized any test that differentiates between these mutations. The direct superclade is Z159 (R1b1a1a2a1a1c2b1b). In the 2012 ISOGG tree, the notation for Z159 was R1b1a2a1a1a3b2a2.