This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Techniques in molecular biology, Subject name: Biochemistry
[{'content': 'Transgenic animals are: \nSelect and explain. \nA. Genetically modified organisms with a new heritable character, B. Serve as models for understanding the human diseases, C. Proteins produced by them are used as therapeutic agents, D. All the above', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Transgenic animal Whose genome has been altered by the transfer of a gene from another species Genetically modified organisms with a new heritable character which serves as model for understanding human diseases. Proteins produced by transgenic animals are used as therapeutic agents.', 'role': 'assistant'}]