DNA Marker Index information for Chromosome: Y Marker: A21915.1Names and Aliases for this DNA Marker: A21915.1, A21915.Chromosome Position in hg38 Human Genome assembly1: 20002925.Chromosome Position in hg19 assembly2: 22164811 .Ancestral marker allele value: G.Derived, alternative, or mutated marker allele value: A.