DNA Marker Index information for Chromosome: Y Marker: BY21988Names and Aliases for this DNA Marker: BY21988, A16528, rs993056677.Chromosome Position in hg38 Human Genome assembly1: 15966285.Chromosome Position in hg19 assembly2: 18078165 .Ancestral marker allele value: A.Derived, alternative, or mutated marker allele value: G.