Why is fetal hemoglobin very efficient at picking up oxygen?
A. The BPG levels are much higher than in maternal hemoglobin.
B. The fetal oxygen-dissociation curve is to the right of the maternal oxygen-dissociation curve.
C. The concentration of fetal hemoglobin is 10% greater than the concentration of maternal hemoglobin.
D. The fetal oxygen-dissociation curve is to the left of the maternal oxygen-dissociation curve.
D
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