DNA Marker Index information for Chromosome: Y Marker: BY15721Names and Aliases for this DNA Marker: BY15721, BZ1138, rs1025980846.Chromosome Position in hg38 Human Genome assembly1: 8249892.Chromosome Position in hg19 assembly2: 8117933 .Ancestral marker allele value: C.Derived, alternative, or mutated marker allele value: T.