DNA Marker Index information for Chromosome: M Marker: B4a1a1a23'Names and Aliases for this DNA Marker: B4a1a1a23', B4a1a1a-T195C!, B4a1a1a-a.Chromosome Position in hg38 Human Genome assembly1: 195.Chromosome Position in hg19 assembly2: 195 .Ancestral marker allele value: C.Derived, alternative, or mutated marker allele value: T.