Trinucleotide Repeat ExpansionTrinucleotide RepeatsFriedreich AtaxiaDNA Repeat ExpansionSpinocerebellar DegenerationsMyotonic DystrophyFragile X SyndromeHuntington DiseaseFragile X Mental Retardation ProteinMicrosatellite RepeatsIron-Binding ProteinsTripletsAllelesRepetitive Sequences, Nucleic AcidMutationBase SequenceSpinocerebellar AtaxiasMachado-Joseph DiseaseHeredodegenerative Disorders, Nervous SystemMolecular Sequence DataDNANerve Tissue ProteinsGenomic InstabilityPolymorphism, GeneticDinucleotide RepeatsMinisatellite RepeatsGenetic MarkersAnticipation, GeneticFlap EndonucleasesNucleic Acid ConformationFrontotemporal DementiaPedigreeTandem Repeat SequencesPolymerase Chain ReactionGenetic VariationInverted Repeat SequencesDNA, SatelliteCerebellar AtaxiaAge of OnsetGenetic Diseases, InbornSequence Analysis, DNAIntranuclear Inclusion BodiesMuscular Dystrophy, OculopharyngealChromosome FragilityRNA-Binding ProteinsModels, GeneticGenotypeDNA PrimersPregnancy, TripletAmyotrophic Lateral SclerosisPhenotypeChromosome MappingNeurodegenerative DiseasesGene FrequencyHaplotypesHeterozygoteNuclear ProteinsGenetics, PopulationDNA RepairGenome, HumanPeptidesProteinsGenetic LinkageReceptors, AndrogenMice, TransgenicEvolution, MolecularMutS Homolog 2 ProteinDNA ReplicationGenes, DominantExonsTranscription, GeneticDNA, PlantAmino Acid SequenceSaccharomyces cerevisiaeMyoclonic Epilepsies, ProgressiveDNA-Binding ProteinsExpressed Sequence TagsRepetitive Sequences, Amino AcidNucleic Acid HeteroduplexesRecombination, GeneticRNA, MessengerChromosomes, Human, XDNA Mutational AnalysisPhylogenyGenetic LociDisease Models, Animal