If a Developing Fetus Made Beta Hemoglobin Subunits Instead of Gamma

Multiple Choice

If a developing fetus made beta hemoglobin subunits instead of gamma hemoglobin subunits, what would be MOST likely to occur?

A) The fetus would extract O₂ from its mother's blood more effectively.
B) The fetal hemoglobin would have a higher affinity for 2,3-bisphosphoglycerate.
C) The fetal hemoglobin would have a lower affinity for CO.
D) The fetus would not be able to extract O₂ from its mother's blood as effectively.
E) The fetus would be less susceptible to sickle cell anemia.