Trinucleotide RepeatsTrinucleotide Repeat ExpansionSpinocerebellar DegenerationsFriedreich AtaxiaFragile X SyndromeSpinocerebellar AtaxiasHuntington DiseaseMachado-Joseph DiseaseFragile X Mental Retardation ProteinBase SequenceRepetitive Sequences, Nucleic AcidAllelesNucleic Acid ConformationNerve Tissue ProteinsMolecular Sequence DataCerebellar AtaxiaMicrosatellite RepeatsDNAHeredodegenerative Disorders, Nervous SystemGenomic InstabilityMutationAnticipation, GeneticOligonucleotidesPedigreeAge of OnsetFlap EndonucleasesMuscular Dystrophy, OculopharyngealPolymerase Chain ReactionChromosome FragilityIron-Binding ProteinsPolymorphism, GeneticRNA-Binding ProteinsIntranuclear Inclusion BodiesNuclear ProteinsPeptidesGenetic Diseases, InbornMinisatellite RepeatsInverted Repeat SequencesReceptors, AndrogenOligodeoxyribonucleotidesNeurodegenerative DiseasesNucleic Acid HeteroduplexesSequence Analysis, DNANucleotidesChromosome Fragile SitesDinucleotide RepeatsModels, GeneticGene Knock-In TechniquesDNA RepairPhenotypeDNA PrimersTandem Repeat SequencesGenes, DominantTranscription, GeneticGenotypeMosaicismGuanineRNAMice, TransgenicGenetic VariationOligoribonucleotidesChromosome MappingGene FrequencyPolydeoxyribonucleotidesChromosomes, Human, XGenetic MarkersCodonRNA, MessengerSequence Tagged SitesAtaxiaAmino Acid SequenceGenome, HumanDNA ReplicationSaccharomyces cerevisiaeExonsHeterozygoteMuscular Atrophy, SpinalExpressed Sequence TagsSequence DeletionDNA, SatelliteDisease Models, AnimalMutagenesisModels, MolecularDNA Mutational AnalysisTemplates, GeneticPoint MutationDNA-Binding ProteinsNucleic Acid DenaturationMutS Homolog 2 ProteinBase PairingEscherichia coliX ChromosomeNervous System DiseasesBinding SitesSaccharomyces cerevisiae ProteinsEndodeoxyribonucleasesFathersAnemia, Sickle CellProteinsGenetic Testing