DNA Marker Index information for Chromosome: M Marker: T669CNames and Aliases for this DNA Marker: T669C, T669, i4000545, rs879005843.Chromosome Position in hg38 Human Genome assembly1: 669.Chromosome Position in hg19 assembly2: 669 .Ancestral marker allele value: T.Derived, alternative, or mutated marker allele value: C.