This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Medicine
[{'content': 'True statement about transgenic mice: \nSelect and explain. \nA. Developed from DNA inseion into feilized egg, B. Have same genome as parents except one or more genes, C. Homozygous are selected, D. All', 'role': 'user'}, {'content': 'Answer: D \nExplanation: A i.e. Developed from DNA inseion into feilized egg; B i.e. Have same genome as parents except one or more genes; C i.e. Homozygous are selected:', 'role': 'assistant'}]