The fragile (X) syndrome.
Turner
G
G
D005260:Female; D005600:Fragile X Syndrome / Q000235:genetics / Q000473:pathology; D005817:Genetic Counseling; D006801:Humans; D007360:Intelligence; D008297:Male; D011296:Prenatal Diagnosis; D012729:Sex Chromosome Aberrations / Q000235:genetics / Q000473:pathology