system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
α polypeptide of hemoglobin closely resembles which of the following?
assistant
The correct answer is  Although it possesses seven rather than eight helical regions, the α polypeptide of hemoglobin also closely resembles myoglobin.
Ref: Harper’s illustrated biochemistry. 30th edition page no: 54