DNA Marker Index information for Chromosome: Y Marker: MFY491Names and Aliases for this DNA Marker: MFY491, FTD90088.Chromosome Position in hg38 Human Genome assembly1: 26522475.Chromosome Position in hg19 assembly2: 28668622 .Ancestral marker allele value: C.Derived, alternative, or mutated marker allele value: T.