DNA Marker Index information for Chromosome: Y Marker: BY40639.1Names and Aliases for this DNA Marker: BY40639.1, BY40639.Chromosome Position in hg38 Human Genome assembly1: 8495951.Chromosome Position in hg19 assembly2: 8363992 .Ancestral marker allele value: C.Derived, alternative, or mutated marker allele value: T.