The type of hemoglobin that has least affinity for 2,3-Diphosphoglycerate (2,3-DPG) or (2,3-BPG) is:: (A) HbA, (B) HbF, (C) HB, (D) HgA2
Answer is B. Foetal hemoglobin does not bind 2,3-DPG. Ref: Four Hidden Metamorphoses: A Remark on Blood, Muscle, Mental Diseases and Cancer By Maurice Israel, 2004, Page 9