title: Evolution of mitochondrial DNA sequences in Xenopus.
mesh_terms: D000818:Animals; D001483:Base Sequence; D005075:Biological Evolution; D002458:Cell Fractionation; D002499:Centrifugation, Density Gradient; D004247:DNA / Q000032:analysis*; D004591:Electrophoresis, Polyacrylamide Gel; D005260:Female; D006358:Hot Temperature; D008854:Microscopy, Electron; D008928:Mitochondria / Q000032:analysis*; D008970:Molecular Weight; D009691:Nucleic Acid Denaturation; D009693:Nucleic Acid Hybridization; D009695:Nucleic Acid Renaturation; D010053:Ovary / Q000032:analysis; D010759:Phosphorus Isotopes; D012335:RNA, Ribosomal; D012343:RNA, Transfer; D014316:Tritium; D014981:Xenopus / Q000502:physiology*
chemical_list: D010759:Phosphorus Isotopes; D012335:RNA, Ribosomal; D014316:Tritium; D004247:DNA; D012343:RNA, Transfer