title: Mutational pressure as the main cause of molecular evolution and polymorphism.
mesh_terms: D000483:Alleles; D000818:Animals; D001483:Base Sequence; D005075:Biological Evolution; D004247:DNA; D004330:Drosophila; D004798:Enzymes / Q000096:biosynthesis; D005796:Genes; D014644:Genetic Variation; D008954:Models, Biological; D009154:Mutation; D011110:Polymorphism, Genetic; D012343:RNA, Transfer; D012641:Selection, Genetic
chemical_list: D004798:Enzymes; D004247:DNA; D012343:RNA, Transfer