DNA Marker Index information for Chromosome: Y Marker: YP4887Names and Aliases for this DNA Marker: YP4887, rs1249687771.Chromosome Position in hg38 Human Genome assembly1: 19514528.Chromosome Position in hg19 assembly2: 21676414 .Ancestral marker allele value: T.Derived, alternative, or mutated marker allele value: A.