DNA Marker Index information for Chromosome: Y Marker: BY38123Names and Aliases for this DNA Marker: BY38123, Y135541, rs887260173.Chromosome Position in hg38 Human Genome assembly1: 7813079.Chromosome Position in hg19 assembly2: 7681120 .Ancestral marker allele value: C.Derived, alternative, or mutated marker allele value: T.