This is my latest assignment.
Very hard to believe a haplogroup where I am U106-, Z381-, and Z156-. This SNP is a Nat Geo 2.0 Next Gen SNP and the raw assignment is Cytosine. I need to know if X-> C is the actual mutation folks look for. This could easily be another random mutation on our part.
Update: the U106 spreadsheet of Raymond Wing shows that this change should be G -> A, not a cytosine. So this is another natural mutation, not a diagnostic marker.
Update 2 6/25/2017: for the folks in the L21 Yahoo groups hitting this page repeatedly, thank you. I didn’t realize that my issue was more common than realized. The issue is pretty simple. Nat Geo Geno 2.0 transfers have a data issue in that any point mutation at a site is classed as a “true”, even though the odds of it being the mutation ‘on the books’ is one in three. These classifications wreak havoc with ftDNA terminal haplotype software (crufty stuff, not smart enough to double check the mutation) and so if you do not eventually do a Big Y, your life will become dominated by ftDNA mistakes that you will have to check manually.