title: Pre-Darwinian and non-Darwinian evolution of proteins.
mesh_terms: D000595:Amino Acid Sequence; D005075:Biological Evolution; D005815:Genetic Code; D014644:Genetic Variation; D006579:Heterozygote; D008967:Molecular Biology; D009154:Mutation; D010455:Peptides; D012641:Selection, Genetic; D013223:Statistics as Topic
chemical_list: D010455:Peptides