Trinucleotide Repeat ExpansionTrinucleotide RepeatsDNA RepairFriedreich AtaxiaDNA Repeat ExpansionSpinocerebellar DegenerationsMyotonic DystrophyDNA Mismatch RepairFragile X SyndromeHuntington DiseaseFragile X Mental Retardation ProteinMicrosatellite RepeatsIron-Binding ProteinsAllelesMutS Homolog 2 ProteinMutationBase Pair MismatchPhenotypeBase SequenceRepetitive Sequences, Nucleic AcidMutS DNA Mismatch-Binding ProteinMolecular Sequence DataTandem Repeat SequencesNucleic Acid HeteroduplexesDNASpinocerebellar AtaxiasGenomic InstabilityDNA Repair EnzymesMachado-Joseph DiseaseDinucleotide RepeatsDNA-Binding ProteinsNuclear ProteinsPolymerase Chain ReactionHeredodegenerative Disorders, Nervous SystemPolymorphism, GeneticPedigreeGenetic MarkersMinisatellite RepeatsNerve Tissue ProteinsFlap EndonucleasesNucleic Acid ConformationAnticipation, GeneticDNA, SatelliteGenetic VariationColorectal Neoplasms, Hereditary NonpolyposisFrontotemporal DementiaModels, GeneticGenotypeSequence Analysis, DNAInverted Repeat SequencesAdaptor Proteins, Signal TransducingAge of OnsetDNA PrimersRecombination, GeneticCerebellar AtaxiaHeterozygoteSaccharomyces cerevisiaeGenetic Diseases, InbornIntranuclear Inclusion BodiesChromosome FragilityDNA ReplicationChromosome MappingMuscular Dystrophy, OculopharyngealRNA-Binding ProteinsAdenosine TriphosphatasesAmino Acid SequenceMicrosatellite InstabilityProteinsGene FrequencyDNA DamageDNA Mutational AnalysisSaccharomyces cerevisiae ProteinsHaplotypesAmyotrophic Lateral SclerosisEndodeoxyribonucleasesGenome, HumanGenetic LinkageGenetics, PopulationPeptidesNeurodegenerative DiseasesFrameshift MutationDNA, FungalExonsMice, TransgenicTranscription, GeneticCell LineEvolution, MolecularCarrier ProteinsSequence DeletionMutagenesisRNA, MessengerGenetic TestingGenes, DominantEscherichia coliNeoplasm ProteinsReceptors, AndrogenDNA, PlantGuanineDisease Models, AnimalPhylogeny