... I'm fine with that, so the only remaining question is this a very stable Unique Event Polymorphism (UEP)? I think the concept of a UEP is somewhat false, from a technical standpoint, but it is important to know if something is very stable.
SNPs at a single location on the Y chromosome can and do occur more than once "in an eternity." That means there really is no such thing as a Unique Event Polymorphism, or UEP. Ken Nordtvedt has long said the whole concept was foolish.
The researchers are evaluating the stability of SNPs so perhaps they need to start using a term more appropriate to what they are evaluating, perhaps "Very stable Event Polymorphism" (VEP)?