Trinucleotide RepeatsTrinucleotide Repeat ExpansionFriedreich AtaxiaFragile X SyndromeHuntington DiseaseSpinocerebellar DegenerationsFragile X Mental Retardation ProteinBase SequenceRepetitive Sequences, Nucleic AcidMachado-Joseph DiseaseMolecular Sequence DataNucleic Acid ConformationAllelesMicrosatellite RepeatsDNANerve Tissue ProteinsHeredodegenerative Disorders, Nervous SystemGenomic InstabilityDNA Repeat ExpansionMutationMuscular Dystrophy, OculopharyngealOligonucleotidesIron-Binding ProteinsPolymerase Chain ReactionFlap EndonucleasesChromosome FragilityPolymorphism, GeneticPalatal Expansion TechniqueAnticipation, GeneticRNA-Binding ProteinsCerebellar AtaxiaPedigreeMinisatellite RepeatsGenetic Diseases, InbornAge of OnsetPeptidesSequence Analysis, DNAIntranuclear Inclusion BodiesInverted Repeat SequencesModels, GeneticReceptors, AndrogenOligodeoxyribonucleotidesPhenotypeMice, TransgenicGenetic VariationChromosome Fragile SitesNucleic Acid HeteroduplexesDinucleotide RepeatsNeurodegenerative DiseasesNucleotidesNuclear ProteinsDNA PrimersTandem Repeat SequencesDNA RepairGene Knock-In TechniquesTranscription, GeneticRNA, MessengerRNAMosaicismGenotypeGuanineAmino Acid SequenceDNA ReplicationSaccharomyces cerevisiaeChromosomes, Human, XOligoribonucleotidesGenome, HumanEvolution, MolecularTissue ExpansionChromosome MappingGenetic MarkersCodonHeterozygoteSequence Tagged SitesPolydeoxyribonucleotidesDNA-Binding ProteinsGene FrequencyDisease Models, AnimalExonsMuscular Atrophy, SpinalExpressed Sequence TagsAtaxiaPhylogenyModels, MolecularDNA, SatelliteSequence DeletionCells, CulturedGenes, DominantPoint MutationMutS Homolog 2 ProteinMutagenesisTranscription FactorsTemplates, GeneticSaccharomyces cerevisiae ProteinsBase PairingX ChromosomeDNA Mutational AnalysisNucleic Acid DenaturationGenetics, PopulationEscherichia coli