This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Genetics, Subject name: Pathology
[{'content': 'Preferential expression of same gene depending on parent of origin is referred to as: \nSelect and explain. \nA. Genomic imprinting, B. Mosaicism, C. Anticipation, D. Non-penetrance', 'role': 'user'}, {'content': "Answer: A \nExplanation: Genomic imprinting Phenomenon that leads to preferential expression of an allele depending on its, parental origin. Eg : Beckwith Wiedemann syndrome (have two paternal but no maternal copies of chromosome 11). Albright's hereditary osteodystrophy (sho stature, brachydactyly and PTH resistance).", 'role': 'assistant'}]