Trinucleotide Repeat ExpansionTrinucleotide RepeatsFriedreich AtaxiaDNA Repeat ExpansionSpinocerebellar DegenerationsMyotonic DystrophyFragile X SyndromeHuntington DiseaseFragile X Mental Retardation ProteinAllelesBrassicaIron-Binding ProteinsGenetic VariationPolymorphism, GeneticBase SequenceMolecular Sequence DataMutationRepetitive Sequences, Nucleic AcidSpinocerebellar AtaxiasMachado-Joseph DiseaseHeredodegenerative Disorders, Nervous SystemMicrosatellite RepeatsNerve Tissue ProteinsGenomic InstabilityFrontotemporal DementiaDNAFlap EndonucleasesAnticipation, GeneticPedigreeMinisatellite RepeatsNucleic Acid ConformationInverted Repeat SequencesTandem Repeat SequencesAge of OnsetCerebellar AtaxiaIntranuclear Inclusion BodiesChromosome FragilityPolymerase Chain ReactionMuscular Dystrophy, OculopharyngealGenetic Diseases, InbornRNA-Binding ProteinsGenetic LociPhenotypeAmyotrophic Lateral SclerosisNuclear ProteinsNeurodegenerative DiseasesModels, GeneticSequence Analysis, DNAChromosome MappingProteinsGenotypePeptidesGenetic MarkersDNA RepairMice, TransgenicReceptors, AndrogenGenes, DominantDNA PrimersGenome, HumanTranscription, GeneticGenetic LinkageHeterozygoteDNA ReplicationGene FrequencyExonsMyoclonic Epilepsies, ProgressiveAmino Acid SequenceSaccharomyces cerevisiaeDNA-Binding ProteinsMutS Homolog 2 ProteinRNA, MessengerRepetitive Sequences, Amino AcidNucleic Acid HeteroduplexesDisease Models, AnimalRecombination, Genetic