DNA Marker Index information for Chromosome: Y Marker: Z621.1Names and Aliases for this DNA Marker: Z621.1, Z621, A16862.1, A16862, rs746073459.Chromosome Position in hg38 Human Genome assembly1: 19514919.Chromosome Position in hg19 assembly2: 21676805 .Ancestral marker allele value: G.Derived, alternative, or mutated marker allele value: A.