title: Preferential transcription of Xenopus laevis ribosomal RNA in interspecies hybrids between Xenopus laevis and Xenopus mulleri.
mesh_terms: D000818:Animals; D003433:Crosses, Genetic; D046508:Culture Techniques; D005260:Female; D005809:Genes, Regulator; D005838:Genotype; D006824:Hybridization, Genetic; D008297:Male; D008970:Molecular Weight; D009693:Nucleic Acid Hybridization; D010759:Phosphorus Isotopes; D012335:RNA, Ribosomal / Q000096:biosynthesis*; D014158:Transcription, Genetic; D014316:Tritium; D014981:Xenopus / Q000378:metabolism*
chemical_list: D010759:Phosphorus Isotopes; D012335:RNA, Ribosomal; D014316:Tritium