DNA Marker Index information for Chromosome: Y Marker: Z191.1Names and Aliases for this DNA Marker: Z191.1, Z191, S477.1, S477, rs754301873.Chromosome Position in hg38 Human Genome assembly1: 16854101.Chromosome Position in hg19 assembly2: 18965981 .Ancestral marker allele value: T.Derived, alternative, or mutated marker allele value: G.