DNA Marker Index information for Chromosome: Y Marker: BY40638.1Names and Aliases for this DNA Marker: BY40638.1, BY40638.Chromosome Position in hg38 Human Genome assembly1: 8495325.Chromosome Position in hg19 assembly2: 8363366 .Ancestral marker allele value: G.Derived, alternative, or mutated marker allele value: T.