DNA Marker Index information for Chromosome: M Marker: C12403TNames and Aliases for this DNA Marker: C12403T, C12403, i3001112, rs879096684.Chromosome Position in hg38 Human Genome assembly1: 12403.Chromosome Position in hg19 assembly2: 12403 .Ancestral marker allele value: C.Derived, alternative, or mutated marker allele value: T.