Variation in rDNA redundancy level and nucleolar organizer length in normal and variant lines of the Mexican axolotl

MeSH terms

• Ambystoma / embryology*
• Animals
• Cell Nucleolus*
• Centrifugation, Density Gradient
• Chromosomes*
• Crosses, Genetic
• DNA / analysis*
• Embryo, Nonmammalian / cytology
• Female
• Genes
• Genetic Variation*
• Genotype
• Male
• Mutation
• Nucleic Acid Hybridization
• RNA, Ribosomal
• Ribosomes / analysis*
• Spectrophotometry
• Xenopus