DNA Marker Index information for Chromosome: M Marker: B4a1a1a12Names and Aliases for this DNA Marker: B4a1a1a12, B4a1a1a24.Chromosome Position in hg38 Human Genome assembly1: 16305.Chromosome Position in hg19 assembly2: 16305 .Ancestral marker allele value: A.Derived, alternative, or mutated marker allele value: G.