DNA Marker Index information for Chromosome: Y Marker: Z18Names and Aliases for this DNA Marker: Z18, YSC0000053, S493, rs767290651.Chromosome Position in hg38 Human Genome assembly1: 12879820.Chromosome Position in hg19 assembly2: 14991735 .Ancestral marker allele value: G.Derived, alternative, or mutated marker allele value: A.