DNA Marker Index information for Chromosome: Y Marker: B645Names and Aliases for this DNA Marker: B645, FT333414, rs776759231.Chromosome Position in hg38 Human Genome assembly1: 2921695.Chromosome Position in hg19 assembly2: 2789736 .Ancestral marker allele value: A.Derived, alternative, or mutated marker allele value: G.