DNA Marker Index information for Chromosome: M Marker: U4b1b'Names and Aliases for this DNA Marker: U4b1b', U4b1-T152C!, U4b1-T146C!, U4b1-a.Chromosome Position in hg38 Human Genome assembly1: 146.Chromosome Position in hg19 assembly2: 146 .Ancestral marker allele value: C.Derived, alternative, or mutated marker allele value: T.