DNA Marker Index information for Chromosome: Y Marker: DF49Names and Aliases for this DNA Marker: DF49, S474, AM01922, rs769171919.Chromosome Position in hg38 Human Genome assembly1: 20573713.Chromosome Position in hg19 assembly2: 22735599 .Ancestral marker allele value: G.Derived, alternative, or mutated marker allele value: A.