DNA Marker Index information for Chromosome: Y Marker: S2979Names and Aliases for this DNA Marker: S2979, B1091, rs745723007.Chromosome Position in hg38 Human Genome assembly1: 19673019.Chromosome Position in hg19 assembly2: 21834905 .Ancestral marker allele value: G.Derived, alternative, or mutated marker allele value: T.