DNA Marker Index information for Chromosome: Y Marker: BY31.3Names and Aliases for this DNA Marker: BY31.3, F14779.3.Chromosome Position in hg38 Human Genome assembly1: 16647360.Chromosome Position in hg19 assembly2: 18759240 .Ancestral marker allele value: G.Derived, alternative, or mutated marker allele value: A.