title: "Fragile X" syndrome and its puzzling genetics.
authors.forename: D M
authors.initials: DM
authors.lastname: Barnes
mesh_terms: D002675:Child, Preschool; D005260:Female; D005600:Fragile X Syndrome / Q000175:diagnosis / Q000235:genetics*; D006801:Humans; D008297:Male; D012729:Sex Chromosome Aberrations / Q000235:genetics*; D014960:X Chromosome / Q000648:ultrastructure