DNA Marker Index information for Chromosome: M Marker: J1b1b1f1Names and Aliases for this DNA Marker: J1b1b1f1.Chromosome Position in hg38 Human Genome assembly1: 4913.Chromosome Position in hg19 assembly2: 4913 .Ancestral marker allele value: A.Derived, alternative, or mutated marker allele value: C.