Trinucleotide Repeat ExpansionTrinucleotide RepeatsFriedreich AtaxiaDNA Repeat ExpansionSpinocerebellar DegenerationsMyotonic DystrophyFragile X SyndromeHuntington DiseaseFragile X Mental Retardation ProteinMicrosatellite RepeatsIron-Binding ProteinsAllelesMutationChromosome MappingChromosomesBase SequenceRepetitive Sequences, Nucleic AcidMolecular Sequence DataPedigreePoint MutationSpinocerebellar AtaxiasGenetic MarkersX ChromosomeMachado-Joseph DiseaseDNAPolymerase Chain ReactionPolymorphism, GeneticHeredodegenerative Disorders, Nervous SystemGenomic InstabilityNerve Tissue ProteinsMutation, MissenseDinucleotide RepeatsSequence Analysis, DNAGenetic VariationGenotypeTandem Repeat SequencesMinisatellite RepeatsGenetic LinkageFrontotemporal DementiaDNA, SatelliteFlap EndonucleasesChromosome BandingNucleic Acid ConformationAnticipation, GeneticHeterozygotePhenotypeModels, GeneticAge of OnsetChromosome FragilityInverted Repeat SequencesChromosomes, Human, Pair 9Chromosomes, Human, XDNA PrimersChromosome AberrationsSex ChromosomesCerebellar AtaxiaChromosomes, Human, Pair 1Genetic Diseases, InbornChromosomes, HumanIntranuclear Inclusion BodiesNuclear ProteinsRNA-Binding ProteinsExonsMuscular Dystrophy, OculopharyngealGene FrequencyHaplotypesChromosomes, BacterialAmino Acid SequenceChromosome DeletionChromosome SegregationGenes, DominantRecombination, GeneticGenome, HumanChromosomes, Human, Pair 6Frameshift MutationGenetics, PopulationChromosomes, Human, Pair 17Chromosomes, Human, Pair 7Amyotrophic Lateral SclerosisChromosomes, Human, Pair 11Chromosomes, PlantDNA Mutational AnalysisProteinsEvolution, MolecularDNA RepairChromosomes, Human, YDNA-Binding ProteinsChromosomes, MammalianSaccharomyces cerevisiaeNeurodegenerative DiseasesDNA ReplicationTranscription, GeneticChromosomes, Artificial, BacterialChromosomes, FungalChromosomes, Human, Pair 21PeptidesChromosomes, Human, Pair 2Chromosomes, Human, Pair 13Mice, TransgenicDNA, Plant