DNA Marker Index information for Chromosome: Y Marker: Y20986Names and Aliases for this DNA Marker: Y20986, BY11183, rs1251474028.Chromosome Position in hg38 Human Genome assembly1: 8469666.Chromosome Position in hg19 assembly2: 8337707 .Ancestral marker allele value: A.Derived, alternative, or mutated marker allele value: T.