DNA Marker Index information for Chromosome: Y Marker: BY4684Names and Aliases for this DNA Marker: BY4684, Y18556, rs978736468.Chromosome Position in hg38 Human Genome assembly1: 13249977.Chromosome Position in hg19 assembly2: 15361857 .Ancestral marker allele value: C.Derived, alternative, or mutated marker allele value: T.