Walk Through the Y

From ISOGG Wiki

Walk Through the Y is a collaborative programme run by the commercial genetic genealogy testing company Family Tree DNA and headed up by Thomas Krahn. The objective is to identify new single-nucleotide polymorphisms on the Y chromosome. Several members of specific haplogroups are required to sign up for the project. Their results are usually co-ordinated in a dedicated WTY project (see list below). The participants each have a large region of their Y chromosomes sequenced (around 200,000 base pairs), and the results are then compared. Participation in the Walk Through the Y project costs $750. Participants are either self-funded or the cost is subsidised by donations to the various haplogroup projects. Participation in the WTY Project is by application only. Prospective participants should in the first instance consult the group administrator of their haplogroup project.

List of Walk Through the Y projects

• R-L21 Walk Through the Y project A WTY project for anyone in the P312 subclade of R1b1b2 who has tested positive for L21 (P312+ L21+)
• R-P312 Walk Through the Y project A WTY project for anyone in the P312 subclade of R1b1b2 who has tested negative for L21 (P312+ L21-)
• R1b-L48 Walk Through the Y project A WTY project for anyone in the U106 subclade of R1b1b2 who has tested positive for L48 (U106+ L48+)
• R-U106xL48 WTY Project A WTY project for anyone in the U106 subclade of R1b1b2 who has tested negative for L48 (U106+ L48-)
• Haplogroup R2 (M124) Walk Through the Y Project

External links

• FTDNA FAQ on Walk through the Y
• Thomas Krahn's Walk through the Y presentation at the FTDNA conference in 2011
• Thomas Krahn's Walk through the Y presentation at the FTDNA conference in 2010
• "Walk through the Y" concept presented at the FTDNA conference in 2009
• The "Walk on the Y" project presented at the FTDNA conference in 2007
• Thomas Krahn's Y chromosome browser
• Thomas Krahn's Draft Y chromosome phylogenetic tree