Biochemistry About O2 dissociation curve, true is A Affinity of O2 with Hb decreases as Hb attaches to O2 in linear fashion B 1 Hb attaches to 2 molecules of 2,3 DPG C O2 affinity will be equal in both HbF and HbA in the absence of 2, 3DPG D Carboxy Hb increases releases of O2 in blood (shift O2 dissociation curve to right) 💡 Explanation About O2 dissociation curve, true is ✓ Correct Answer: C. O2 affinity will be equal in both HbF and HbA in the absence of 2, 3DPG