Which of the following types of hemoglobin has a higher affinity for oxygen than adult hemoglobin?

A Fetal hemoglobin ✓
B Adult hemoglobin
C Sickle cell hemoglobin
D Hemoglobin A2

Explanation

Fetal hemoglobin has a higher affinity for oxygen than adult hemoglobin, allowing the fetus to extract oxygen from the mother's bloodstream.

Source

Berne and Levy Physiology
Hematology Hematology: Hemoglobin and Oxygen Transport Hematology: Hemoglobin and Oxygen Transport Easy MEDICAL Confidence: high