DNA Marker Index information for Chromosome: Y Marker: BY40273Names and Aliases for this DNA Marker: BY40273, Y139946, rs939783841.Chromosome Position in hg38 Human Genome assembly1: 19822560.Chromosome Position in hg19 assembly2: 21984446 .Ancestral marker allele value: A.Derived, alternative, or mutated marker allele value: G.