I stated more than once that I don't know much on molecular biology, albeit I do know a bit more about science than most people on this forum; I do know about physics and statystics, and have some deep albeit non systematic knowledge about some medicine branches.
I have always considered DNA as a protein but I believe you are right, so I re-formulize: there is no thing such as a Y-allele, neither a specific allele to attribute to Sollecito, there is a Y haplotype, a sequence. And attribution is a statystical property of that sequence - not of single alleles.
Yes I do know an allele is a variant of a gene, that is portion of code that is varied (I do know that most of DNA sequences are repetitive). Theoretically rare alleles could increase the probability of attribution.
By the way I note that you attempt to exploit my ignorance in molecular biology as strain, to make an argument about me not being reliable in "any technical matter". There is no such thing like "technical matter" and there is no expert in "technical matter", there are technicalities in each of the various subjects and branches of human knowledge. All technical experts are actually people with an area of expertise on some very limited subject. People who complain about one Y-allele being attributed to Sollecito have sure a bigger problem. There is no need to go forward. I think that your strain attempting to call me "unreliable" is a kind of desperate denial.