DNA Marker Index information for Chromosome: M Marker: B2a1a1bNames and Aliases for this DNA Marker: B2a1a1b.Chromosome Position in hg38 Human Genome assembly1: 8271.Chromosome Position in hg19 assembly2: 8271 .Ancestral marker allele value: ins.Derived, alternative, or mutated marker allele value: ACCCCCTCT.