DNA Marker Index information for Chromosome: Y Marker: BY20366Names and Aliases for this DNA Marker: BY20366, FGC71910, rs904891606.Chromosome Position in hg38 Human Genome assembly1: 18927820.Chromosome Position in hg19 assembly2: 21089706 .Ancestral marker allele value: T.Derived, alternative, or mutated marker allele value: C.