This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: All India exam, Subject name: Anatomy
[{'content': 'When one gene is inherited from one parent only, it is known as \nSelect and explain. \nA. Genomic imprinting, B. Mosaicism, C. Alleles, D. Chimerism', 'role': 'user'}, {'content': "Answer: A \nExplanation: These genes are called 'imprinted' because one copy of the gene was epigenetically marked or imprinted in either the egg or the sperm", 'role': 'assistant'}]