DNA Marker Index information for Chromosome: Y Marker: MF748049Names and Aliases for this DNA Marker: MF748049, rs1260545453.Chromosome Position in hg38 Human Genome assembly1: 20149359.Chromosome Position in hg19 assembly2: 22311245 .Ancestral marker allele value: A.Derived, alternative, or mutated marker allele value: T.