Trinucleotide Repeat ExpansionTrinucleotide RepeatsFriedreich AtaxiaDNA Repeat ExpansionSpinocerebellar DegenerationsMyotonic DystrophyFragile X SyndromeHuntington DiseaseFragile X Mental Retardation ProteinMicrosatellite RepeatsIron-Binding ProteinsAllelesRepetitive Sequences, Nucleic AcidMutationBase SequenceSpinocerebellar AtaxiasMachado-Joseph DiseaseHeredodegenerative Disorders, Nervous SystemMolecular Sequence DataGenomic InstabilityNerve Tissue ProteinsDinucleotide RepeatsPolymorphism, GeneticDNAMinisatellite RepeatsGenetic MarkersFrontotemporal DementiaFlap EndonucleasesPedigreeAnticipation, GeneticTandem Repeat SequencesPolymerase Chain ReactionNucleic Acid ConformationInverted Repeat SequencesGenetic VariationDNA, SatelliteCerebellar AtaxiaAge of OnsetIntranuclear Inclusion BodiesChromosome FragilitySequence Analysis, DNAGenetic Diseases, InbornMuscular Dystrophy, OculopharyngealRNA-Binding ProteinsGenotypeModels, GeneticDNA PrimersAmyotrophic Lateral SclerosisPhenotypeChromosome MappingGene FrequencyNeurodegenerative DiseasesHaplotypesHeterozygoteGenetics, PopulationNuclear ProteinsDNA RepairGenome, HumanPeptidesGenetic LinkageProteinsReceptors, AndrogenMice, TransgenicMutS Homolog 2 ProteinGenes, DominantEvolution, MolecularDNA, PlantDNA ReplicationExonsTranscription, GeneticMyoclonic Epilepsies, ProgressiveExpressed Sequence TagsSaccharomyces cerevisiaeDNA-Binding ProteinsRecombination, GeneticChromosomes, Human, XRepetitive Sequences, Amino AcidNucleic Acid HeteroduplexesGenetic LociAmino Acid SequenceDNA Mutational AnalysisRNA, MessengerDisease Models, Animal