DNA Marker Index information for Chromosome: Y Marker: P261Names and Aliases for this DNA Marker: P261, rs370036036, rs796289797.Chromosome Position in hg38 Human Genome assembly1: 11871573.Chromosome Position in hg19 assembly2: 13992279 .Ancestral marker allele value: G.Derived, alternative, or mutated marker allele value: A.