DNA Marker Index information for Chromosome: M Marker: B4a1b'Names and Aliases for this DNA Marker: B4a1b', B4a1-T16311C!, B4a1-a.Chromosome Position in hg38 Human Genome assembly1: 16311.Chromosome Position in hg19 assembly2: 16311 .Ancestral marker allele value: C.Derived, alternative, or mutated marker allele value: T.