title: Anomalous X chromosome inactivation: the link between female zygotes, monozygotic twinning, and neural tube defects?
mesh_terms: D004200:Diseases in Twins; D004303:Dosage Compensation, Genetic; D005260:Female; D006801:Humans; D009136:Muscular Dystrophies / Q000235:genetics; D009436:Neural Tube Defects / Q000235:genetics*; D014427:Twins; D014430:Twins, Monozygotic