title: Base composition of ribosomal RNA and evolution.
mesh_terms: D000818:Animals; D000845:Annelida / Q000032:analysis; D001181:Arthropods / Q000032:analysis; D001200:Ascaris / Q000032:analysis; D001419:Bacteria / Q000032:analysis; D005075:Biological Evolution; D002852:Chromatography, Ion Exchange; D003063:Cnidaria / Q000032:analysis; D004447:Echinodermata / Q000032:analysis; D056890:Eukaryota / Q000032:analysis; D005658:Fungi / Q000032:analysis; D006868:Hydrolysis; D008974:Mollusca / Q000032:analysis; D010944:Plants / Q000032:analysis; D011161:Porifera / Q000032:analysis; D012335:RNA, Ribosomal / Q000032:analysis*; D012265:Ribonucleotides / Q000032:analysis*; D013045:Species Specificity; D014714:Vertebrates
chemical_list: D012335:RNA, Ribosomal; D012265:Ribonucleotides