DNA Marker Index information for Chromosome: Y Marker: ZW20.1Names and Aliases for this DNA Marker: ZW20.1, ZW20.Chromosome Position in hg38 Human Genome assembly1: 20625666.Chromosome Position in hg19 assembly2: 22787552 .Ancestral marker allele value: G.Derived, alternative, or mutated marker allele value: T.