title: [Evolution and ribosomal RNA (author's transl)].
mesh_terms: D000818:Animals; D005075:Biological Evolution; D002499:Centrifugation, Density Gradient; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D006801:Humans; D007313:Insecta / Q000032:analysis; D012335:RNA, Ribosomal / Q000032:analysis*
chemical_list: D012335:RNA, Ribosomal