DNA Marker Index information for Chromosome: Y Marker: DF21Names and Aliases for this DNA Marker: DF21, S192, rs138322855.Chromosome Position in hg38 Human Genome assembly1: 10041306.Chromosome Position in hg19 assembly2: 9878915 .Ancestral marker allele value: C.Derived, alternative, or mutated marker allele value: T.