DNA Marker Index information for Chromosome: M Marker: B4a1a1a4Names and Aliases for this DNA Marker: B4a1a1a4.Chromosome Position in hg38 Human Genome assembly1: 16249.Chromosome Position in hg19 assembly2: 16249 .Ancestral marker allele value: T.Derived, alternative, or mutated marker allele value: C.