Trinucleotide Repeat ExpansionTrinucleotide RepeatsHuntington DiseaseFriedreich AtaxiaDNA Repeat ExpansionSpinocerebellar DegenerationsMyotonic DystrophyFragile X SyndromeFragile X Mental Retardation ProteinMicrosatellite RepeatsIron-Binding ProteinsAllelesMutationRepetitive Sequences, Nucleic AcidNerve Tissue ProteinsBase SequenceSpinocerebellar AtaxiasMachado-Joseph DiseaseMolecular Sequence DataHeredodegenerative Disorders, Nervous SystemPedigreeGenetic MarkersAge of OnsetDNAGenomic InstabilityPolymorphism, GeneticDinucleotide RepeatsMinisatellite RepeatsFrontotemporal DementiaPolymerase Chain ReactionFlap EndonucleasesAnticipation, GeneticTandem Repeat SequencesNucleic Acid ConformationGenetic VariationNuclear ProteinsInverted Repeat SequencesGenetic Diseases, InbornNeurodegenerative DiseasesDNA, SatelliteCerebellar AtaxiaGenotypeIntranuclear Inclusion BodiesPhenotypeSequence Analysis, DNAChromosome FragilityMuscular Dystrophy, OculopharyngealModels, GeneticRNA-Binding ProteinsChromosome MappingHeterozygotePeptidesMice, TransgenicGenetic LinkageGene FrequencyHaplotypesDNA PrimersAmyotrophic Lateral SclerosisDisease Models, AnimalGenetics, PopulationProteinsDNA RepairGenome, HumanGenetic TestingBrainChromosomes, Human, Pair 4Receptors, AndrogenExonsBipolar DisorderGenes, DominantMutS Homolog 2 ProteinEvolution, MolecularDNA, PlantDNA ReplicationTranscription, GeneticAmino Acid SequenceMyoclonic Epilepsies, ProgressiveExpressed Sequence TagsSaccharomyces cerevisiaeDNA-Binding ProteinsChromosomes, Human, XDNA Mutational AnalysisRecombination, GeneticGene Knock-In TechniquesRepetitive Sequences, Amino AcidRNA, MessengerMental DisordersNucleic Acid HeteroduplexesGenetic Loci