Trinucleotide Repeat ExpansionTrinucleotide RepeatsFriedreich AtaxiaDNA Repeat ExpansionSpinocerebellar DegenerationsMyotonic DystrophyFragile X SyndromeHuntington DiseaseFragile X Mental Retardation ProteinIron-Binding ProteinsAllelesChromosome MappingChromosomesBase SequenceMolecular Sequence DataMutationRepetitive Sequences, Nucleic AcidSpinocerebellar AtaxiasGenomic InstabilityMachado-Joseph DiseaseDNASequence Analysis, DNAX ChromosomeMicrosatellite RepeatsHeredodegenerative Disorders, Nervous SystemNerve Tissue ProteinsPedigreePolymerase Chain ReactionNucleic Acid ConformationTandem Repeat SequencesChromosome BandingFrontotemporal DementiaFlap EndonucleasesAnticipation, GeneticInverted Repeat SequencesMinisatellite RepeatsChromosome AberrationsChromosome FragilityAmino Acid SequenceGenome, HumanPhenotypeChromosomes, Human, Pair 9Age of OnsetGenetic MarkersModels, GeneticPolymorphism, GeneticCerebellar AtaxiaChromosomes, Human, Pair 1Chromosomes, Human, XSex ChromosomesChromosomes, HumanIntranuclear Inclusion BodiesRNA-Binding ProteinsExonsGenetic Diseases, InbornChromosomes, BacterialMuscular Dystrophy, OculopharyngealNuclear ProteinsChromosomes, Artificial, BacterialChromosomes, Human, Pair 7Genetic LinkagePhylogenyGenotypeDNA PrimersChromosomes, Human, Pair 11Genetic VariationChromosome SegregationRecombination, GeneticTranscription, GeneticChromosomes, PlantCloning, MolecularChromosome DeletionChromosomes, Human, Pair 17GenomicsProteinsEvolution, MolecularAmyotrophic Lateral SclerosisSequence AlignmentChromosomes, Human, Pair 21GenomeChromosomes, Human, Pair 6Neurodegenerative DiseasesRNA, MessengerChromosomes, Human, Pair 22Chromosomes, FungalPeptidesDNA RepairDNA-Binding ProteinsDNA ReplicationChromosomes, MammalianSaccharomyces cerevisiaeBlotting, SouthernChromosomes, Human, Pair 4HeterozygoteIntronsMice, TransgenicIn Situ Hybridization, FluorescenceChromosomes, Human, 6-12 and XSequence Homology, Nucleic AcidGenes, Dominant