Which abnormal hemoglobin has 200x more affinity for oxygen than does normal hemoglobin?

Name: Which abnormal hemoglobin has 200x more affinity for oxygen than does normal hemoglobin?
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Question

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Carboxyhemoglobin has 200x more affinity for oxygen than does normal hemoglobin because the carbon monoxide molecule binds to the heme group of hemoglobin with much greater affinity than does oxygen. This prevents oxygen from binding to the hemoglobin molecule, which can lead to tissue hypoxia and death.

Which Abnormal Hemoglobin Has 200x More Affinity for Oxygen Than