DNA Marker Index information for Chromosome: Y Marker: FGC904Names and Aliases for this DNA Marker: FGC904, S6901, rs778322062.Chromosome Position in hg38 Human Genome assembly1: 20476815.Chromosome Position in hg19 assembly2: 22638701 .Ancestral marker allele value: A.Derived, alternative, or mutated marker allele value: T.