General Science • BiologyEasy
Which of the following blood groups is considered the universal donor in human blood transfusions?
A. AB positive
B. O negative✓ Correct Answer
C. A positive
D. B negative
💡 Solution & Explanation
O negative blood is universally compatible for red blood cell transfusions because its red blood cells lack A, B, and Rh surface antigens, minimizing the risk of adverse immune reactions in recipients. Conversely, AB positive individuals serve as universal recipients because their plasma lacks antibodies against A and B antigens.
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