title: On the constancy of the evolutionary rate of cistrons.
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D005075:Biological Evolution; D003574:Cytochrome c Group / Q000096:biosynthesis*; D005796:Genes; D005815:Genetic Code; D006454:Hemoglobins / Q000096:biosynthesis*; D006801:Humans; D008954:Models, Biological; D009154:Mutation
chemical_list: D003574:Cytochrome c Group; D006454:Hemoglobins