DNA Marker Index information for Chromosome: Y Marker: S1977.1Names and Aliases for this DNA Marker: S1977.1, S1977, rs920711554.Chromosome Position in hg38 Human Genome assembly1: 16698537.Chromosome Position in hg19 assembly2: 18810417 .Ancestral marker allele value: T.Derived, alternative, or mutated marker allele value: G.