Trinucleotide Repeat ExpansionTrinucleotide RepeatsHuntington DiseaseFriedreich AtaxiaDNA Repeat ExpansionSpinocerebellar DegenerationsMyotonic DystrophyFragile X SyndromeFragile X Mental Retardation ProteinMicrosatellite RepeatsIron-Binding ProteinsAllelesMutationRepetitive Sequences, Nucleic AcidBase SequenceNerve Tissue ProteinsPedigreeSpinocerebellar AtaxiasMolecular Sequence DataPoint MutationMachado-Joseph DiseaseHeredodegenerative Disorders, Nervous SystemDNAPolymerase Chain ReactionGenetic MarkersPolymorphism, GeneticAge of OnsetGenomic InstabilityDinucleotide RepeatsMutation, MissenseMinisatellite RepeatsFrontotemporal DementiaFlap EndonucleasesGenotypeTandem Repeat SequencesAnticipation, GeneticNuclear ProteinsGenetic VariationSequence Analysis, DNANucleic Acid ConformationHeterozygoteGenetic Diseases, InbornInverted Repeat SequencesPhenotypeDNA, SatelliteModels, GeneticCerebellar AtaxiaChromosome MappingNeurodegenerative DiseasesIntranuclear Inclusion BodiesDNA PrimersChromosome FragilityMuscular Dystrophy, OculopharyngealGenetic LinkageRNA-Binding ProteinsGene FrequencyExonsMice, TransgenicPeptidesGenetic TestingAmyotrophic Lateral SclerosisFrameshift MutationDNA RepairProteinsHaplotypesGenetics, PopulationDisease Models, AnimalGenes, DominantAmino Acid SequenceDNA Mutational AnalysisGenome, HumanDNA-Binding ProteinsSaccharomyces cerevisiaeEvolution, MolecularTranscription, GeneticBrainChromosomes, Human, Pair 4MutS Homolog 2 ProteinReceptors, AndrogenDNA ReplicationCell LineRecombination, GeneticSequence DeletionDNA, PlantRNA, MessengerGerm-Line MutationChromosomes, Human, XMyoclonic Epilepsies, ProgressiveGene Knock-In TechniquesExpressed Sequence TagsFounder EffectNucleic Acid HeteroduplexesSaccharomyces cerevisiae ProteinsTranscription FactorsRepetitive Sequences, Amino AcidPhylogenyGenetic LociX ChromosomeGenetic Predisposition to DiseaseMutation Rate