DNA Marker Index information for Chromosome: Y Marker: MFY421Names and Aliases for this DNA Marker: MFY421, FGC53497, rs765839046.Chromosome Position in hg38 Human Genome assembly1: 3299038.Chromosome Position in hg19 assembly2: 3167079 .Ancestral marker allele value: C.Derived, alternative, or mutated marker allele value: A.