title: Non-randomness of amino-acid changes in the evolution of homologous proteins.
mesh_terms: D000595:Amino Acid Sequence; D000818:Animals; D001412:Bacillus subtilis / Q000032:analysis; D006454:Hemoglobins / Q000032:analysis; D009211:Myoglobin / Q000032:analysis; D012260:Ribonucleases / Q000032:analysis; D012641:Selection, Genetic; D014027:Tobacco Mosaic Virus / Q000032:analysis; D014362:Trypsinogen / Q000032:analysis
chemical_list: D006454:Hemoglobins; D009211:Myoglobin; D014362:Trypsinogen; D012260:Ribonucleases