DNA Marker Index information for Chromosome: M Marker: A3981GNames and Aliases for this DNA Marker: A3981G, A3981, i4001021.Chromosome Position in hg38 Human Genome assembly1: 3981.Chromosome Position in hg19 assembly2: 3981 .Ancestral marker allele value: A.Derived, alternative, or mutated marker allele value: G.