Amplification as a rectification mechanism for the redundant rRNA genes.
D000557:Ambystoma; D000663:Amphibians; D000818:Animals; D001001:Anura; D002025:Bufonidae; D002466:Cell Nucleolus; D002467:Cell Nucleus / Q000032:analysis; D002478:Cells, Cultured; D002875:Chromosomes; D004247:DNA / Q000032:analysis; D005260:Female; D005796:Genes; D008099:Liver / Q000032:analysis; D009693:Nucleic Acid Hybridization; D010063:Ovum / Q000032:analysis / Q000166:cytology; D012335:RNA, Ribosomal / Q000032:analysis / Q000096:biosynthesis*; D011892:Rana catesbeiana; D011894:Rana pipiens; D011898:Ranidae; D014316:Tritium; D014319:Triturus; D014981:Xenopus
D012335:RNA, Ribosomal; D014316:Tritium; D004247:DNA