DNA Marker Index information for Chromosome: Y Marker: S20321Names and Aliases for this DNA Marker: S20321, FGC4150, rs980507490.Chromosome Position in hg38 Human Genome assembly1: 15755420.Chromosome Position in hg19 assembly2: 17867300 .Ancestral marker allele value: T.Derived, alternative, or mutated marker allele value: A.