title: Ring theory. II. Fractional tandem model.
mesh_terms: D000818:Animals; D001483:Base Sequence; D002875:Chromosomes; D004247:DNA; D004277:DNA, Single-Stranded; D004331:Drosophila melanogaster; D008956:Models, Chemical; D013696:Temperature
chemical_list: D004277:DNA, Single-Stranded; D004247:DNA