DNA Marker Index information for Chromosome: Y Marker: MF20726Names and Aliases for this DNA Marker: MF20726, Y157649, rs763374768.Chromosome Position in hg38 Human Genome assembly1: 6830895.Chromosome Position in hg19 assembly2: 6698936 .Ancestral marker allele value: G.Derived, alternative, or mutated marker allele value: A.