DNA Marker Index information for Chromosome: Y Marker: Y77475.2Names and Aliases for this DNA Marker: Y77475.2, rs1007990420.Chromosome Position in hg38 Human Genome assembly1: 19801015.Chromosome Position in hg19 assembly2: 21962901 .Ancestral marker allele value: C.Derived, alternative, or mutated marker allele value: T.