DNA Marker Index information for Chromosome: Y Marker: A20843.1Names and Aliases for this DNA Marker: A20843.1, A20843.Chromosome Position in hg38 Human Genome assembly1: 19815970.Chromosome Position in hg19 assembly2: 21977856 .Ancestral marker allele value: T.Derived, alternative, or mutated marker allele value: C.