DNA Marker Index information for Chromosome: Y Marker: Z25921Names and Aliases for this DNA Marker: Z25921, F14494, rs771142289.Chromosome Position in hg38 Human Genome assembly1: 15666795.Chromosome Position in hg19 assembly2: 17778675 .Ancestral marker allele value: G.Derived, alternative, or mutated marker allele value: A.