DNA Marker Index information for Chromosome: Y Marker: Z820Names and Aliases for this DNA Marker: Z820, CTS7146, rs762446139.Chromosome Position in hg38 Human Genome assembly1: 15207523.Chromosome Position in hg19 assembly2: 17319403 .Ancestral marker allele value: A.Derived, alternative, or mutated marker allele value: G.