DNA Marker Index information for Chromosome: Y Marker: A20415.1Names and Aliases for this DNA Marker: A20415.1, A20415.Chromosome Position in hg38 Human Genome assembly1: 19654853.Chromosome Position in hg19 assembly2: 21816739 .Ancestral marker allele value: G.Derived, alternative, or mutated marker allele value: A.