DNA Marker Index information for Chromosome: Y Marker: S20340.1Names and Aliases for this DNA Marker: S20340.1, S20340.Chromosome Position in hg38 Human Genome assembly1: 15769140.Chromosome Position in hg19 assembly2: 17881020 .Ancestral marker allele value: T.Derived, alternative, or mutated marker allele value: C.