<prompt> Genomic imprinting is seen in:Prader Willi syndromeMarfan syndromeDown syndromeOsteogenesis imperfect  <response>: a. Prader-Willi syndromeRef: Nelsons 20e p 624-626, Ghai 8e p 637Genomic imprinting occurs when the phenotypic expression of a gene depends on the parent of originClassic examples: Prader-Willi syndromeQ and Angelman syndromeQ, Beckwith-Wiedemann syndromeQ, Russell- Silver syndromeQ, pseudohypoparathyroidism and neonatal diabetes. 