title: Fragile X-linked mental retardation.
mesh_terms: D005600:Fragile X Syndrome / Q000235:genetics*; D008040:Genetic Linkage; D006579:Heterozygote; D006801:Humans; D008607:Intellectual Disability / Q000209:etiology / Q000235:genetics*; D012729:Sex Chromosome Aberrations / Q000235:genetics*