DNA Marker Index information for Chromosome: Y Marker: S1786_2Names and Aliases for this DNA Marker: S2786, S1786_2, rs781034642.Chromosome Position in hg38 Human Genome assembly1: 6887238.Chromosome Position in hg19 assembly2: 6755279 .Ancestral marker allele value: G.Derived, alternative, or mutated marker allele value: T.