DNA Marker Index information for Chromosome: Y Marker: BY9841Names and Aliases for this DNA Marker: BY9841, Z21490, rs754932327.Chromosome Position in hg38 Human Genome assembly1: 20498631.Chromosome Position in hg19 assembly2: 22660517 .Ancestral marker allele value: T.Derived, alternative, or mutated marker allele value: C.