What is the frequency of Group A individuals in the U.S. population?

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Multiple Choice

What is the frequency of Group A individuals in the U.S. population?

Explanation:
ABO blood group frequencies in a population are not equal; some types appear more often than others. In the United States, the distribution places type O as the most common, followed by type A, then type B, and then type AB. Specifically, about 45% are type O, around 41% are type A, roughly 9–10% are type B, and 4–5% are type AB. So the frequency of Group A individuals is about 41%, which is why this option is the best match to real-world data. The other percentages don’t align with the well-established distribution across the U.S. population, though exact figures can vary a bit by specific subgroups.

ABO blood group frequencies in a population are not equal; some types appear more often than others. In the United States, the distribution places type O as the most common, followed by type A, then type B, and then type AB. Specifically, about 45% are type O, around 41% are type A, roughly 9–10% are type B, and 4–5% are type AB. So the frequency of Group A individuals is about 41%, which is why this option is the best match to real-world data. The other percentages don’t align with the well-established distribution across the U.S. population, though exact figures can vary a bit by specific subgroups.

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