Physiology Hemoglobin has: A Four polypeptide chains, 2α, 1β, 1γ chain B Four heme molecules and four polypeptide chains C Four heme molecules, 2α, and 2β chains D One heme and one globin molecule 💡 Explanation Hemoglobin has: ✓ Correct Answer: C. Four heme molecules, 2α, and 2β chains