DNA Marker Index information for Chromosome: Y Marker: BY387Names and Aliases for this DNA Marker: BY387, Y7606, MPB448, rs777621380.Chromosome Position in hg38 Human Genome assembly1: 16462057.Chromosome Position in hg19 assembly2: 18573937 .Ancestral marker allele value: T.Derived, alternative, or mutated marker allele value: C.