Genomic imprinting.
D000328:Adult; D004303:Dosage Compensation, Genetic; D005260:Female; D006801:Humans; D008540:Meiosis / Q000235:genetics; D015518:Rett Syndrome / Q000235:genetics*; D012737:Sex Factors; D014430:Twins, Monozygotic / Q000235:genetics*