This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Genetic and genetic disorders, Subject name: Pediatrics
[{'content': 'The process underflying differences in expression of a gene, according to which parent has transmitted, is called \nSelect and explain. \nA. Anticipation, B. Mosiacism, C. Non-penetrance, D. Genomic imprinting', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Genomic imprinting is an epigenetic phenomenon that causes genes to be expressed in a parent-of-origin-specific manner. Reference: GHAI Essential pediatrics, 8th edition', 'role': 'assistant'}]