DNA Marker Index information for Chromosome: Y Marker: BY4161Names and Aliases for this DNA Marker: BY4161.1, BY4161, Y21312, rs1261274186.Chromosome Position in hg38 Human Genome assembly1: 15240795.Chromosome Position in hg19 assembly2: 17352675 .Ancestral marker allele value: G.Derived, alternative, or mutated marker allele value: C.