DNA Marker Index information for Chromosome: M Marker: C4a2a1b1Names and Aliases for this DNA Marker: C4a2a1b1.Chromosome Position in hg38 Human Genome assembly1: 13818.Chromosome Position in hg19 assembly2: 13818 .Ancestral marker allele value: T.Derived, alternative, or mutated marker allele value: C.