DNA Marker Index information for Chromosome: Y Marker: BY20393.1Names and Aliases for this DNA Marker: BY20393.1, BY20393.Chromosome Position in hg38 Human Genome assembly1: 20427840.Chromosome Position in hg19 assembly2: 22589726 .Ancestral marker allele value: G.Derived, alternative, or mutated marker allele value: A.