Walk Through the Y
From ISOGG Wiki
Walk Through the Y was a collaborative programme run by the commercial genetic genealogy testing company Family Tree DNA and headed up by Thomas Krahn. The objective was to identify new single-nucleotide polymorphisms on the Y chromosome. Several members of specific haplogroups were required to sign up for the project. Their results were usually co-ordinated in a dedicated WTY project (see list below). The participants each had a large region of their Y chromosome sequenced, and the results were then compared. The testing was done using traditional Sanger sequencing. Participation in the Walk Through the Y project cost around $500 and at that time around 300,000 base pairs were being sequenced. The coverage increased to over 600,000 by the time the price went up to $950. Participants were either self-funded or the cost was subsidised by donations to the various Y-DNA haplogroup projects. Participation in the WTY Project was by application only.
WTY was discontinued in 2013 and is now replaced by the new next generation sequencing tests. Family Tree DNA launched their NGS Big Y test in November 2013. A comprehensive Y chromosome sequence test is also available from Full Genomes Corporation.
Walk Through the Y Projects
Haplogroup
(Longhand) |
Haplogroup
(Shorthand) |
Project Name | Administrator(s) | Members |
---|---|---|---|---|
R1a | R-M420 | R1a-WTY | 50 | |
R1b1a2a1a1 | R-U106 excluding L48 | R-U106xL48WTY | Peter Op den Velde Boots | 16 |
R1b1a2a1a1c1a2a | R-L1 | R-L1/S26 Y-DNA Haplogroup Project (formerly The Null439 DNA Project) | Blaine T. Bettinger, Ph.D; David Mason | 138 |
R1b1a2a1a1c2b | R-L48 | R1b-L48+WTY Analysis | Charles Moore, Wayne Kauffman | 105 |
R1b1a2a1a2 | R-P312 | R-P312 WTY was merged with R-P312 and Subclades | Vincent Tilroe | 45 |
R1b1a2a1a2c | R-L21 | R-L21WTY | Kirsten Saxe, Alex Williamson, David Pike, David Stedman | 227 |
R2a | R-M124 | R2-M124-WTY | 155 | |
T | T | T-WTY | Paul Woods, Doyle Mathis, Gareth Henson | 25 |
See also
External links
- What is Y-chromosome (Y-DNA) SNP discovery? What is the walk through the Y-chromosome (WTY) project? What will I learn? FTDNA FAQ in the Internet Archive
- Understanding results: Walk through the Y FTDNA FAQs in the Internet Archive
- Thomas Krahn's Walk through the Y presentation at the FTDNA conference in 2012
- 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 draft Y chromosome phylogenetic tree
- The ISOGG Y chromosome browser