DNA Marker Index information for Chromosome: M Marker: C15939TNames and Aliases for this DNA Marker: C15939T, C15939, i4000949, rs878981265.Chromosome Position in hg38 Human Genome assembly1: 15939.Chromosome Position in hg19 assembly2: 15939 .Ancestral marker allele value: C.Derived, alternative, or mutated marker allele value: T.