DNA Marker Index information for Chromosome: Y Marker: Z20274Names and Aliases for this DNA Marker: Z20274, Y12890, rs764192163.Chromosome Position in hg38 Human Genome assembly1: 19000170.Chromosome Position in hg19 assembly2: 21162056 .Ancestral marker allele value: A.Derived, alternative, or mutated marker allele value: G.