Trinucleotide Repeat ExpansionTrinucleotide RepeatsFriedreich AtaxiaDNA Repeat ExpansionSpinocerebellar DegenerationsMyotonic DystrophyFragile X SyndromeHuntington DiseaseFragile X Mental Retardation ProteinMicrosatellite RepeatsIron-Binding ProteinsAllelesChromosome MappingGenomic InstabilityChromosomesMutationRepetitive Sequences, Nucleic AcidBase SequenceMolecular Sequence DataSpinocerebellar AtaxiasMachado-Joseph DiseaseGenetic MarkersX ChromosomeDNAHeredodegenerative Disorders, Nervous SystemPedigreePolymorphism, GeneticDinucleotide RepeatsPolymerase Chain ReactionNerve Tissue ProteinsDNA, SatelliteChromosomal InstabilityMinisatellite RepeatsTandem Repeat SequencesFlap EndonucleasesGenetic VariationAnticipation, GeneticFrontotemporal DementiaChromosome BandingChromosome FragilityChromosome AberrationsNucleic Acid ConformationSequence Analysis, DNAInverted Repeat SequencesGenetic LinkageChromosomes, Human, Pair 9Models, GeneticPhenotypeGenotypeSex ChromosomesAge of OnsetChromosomes, HumanChromosomes, Human, XChromosomes, Human, Pair 1Cerebellar AtaxiaJoint InstabilityGenetic Diseases, InbornIntranuclear Inclusion BodiesNuclear ProteinsDNA PrimersRNA-Binding ProteinsMuscular Dystrophy, OculopharyngealChromosome SegregationHeterozygoteHaplotypesDNA RepairGenome, HumanChromosomes, BacterialChromosome DeletionGene FrequencyRecombination, GeneticChromosomes, Human, Pair 6Chromosomes, PlantChromosomes, Human, Pair 17Chromosomes, Human, Pair 7Chromosomes, Human, Pair 11Chromosomes, Human, YGenetics, PopulationAmyotrophic Lateral SclerosisDNA ReplicationChromosomes, MammalianNeurodegenerative DiseasesChromosomes, Artificial, BacterialProteinsEvolution, MolecularChromosomes, FungalMutS Homolog 2 ProteinDNA-Binding ProteinsChromosomes, Human, Pair 13Chromosomes, Human, Pair 21Chromosomes, Human, Pair 2Microsatellite InstabilityGenes, DominantPeptidesSaccharomyces cerevisiaeAmino Acid SequenceIn Situ Hybridization, FluorescenceTranscription, GeneticDNA, PlantExons