BLOOD CARDIOVASCULAR SYSTEM LYMPHOID ORGANS
BLOOD
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A
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AB
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O
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B
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Detailed explanation-1: -The need for O+ is high because it is the most frequently occurring blood type (37% of the population). The universal red cell donor has Type O negative blood.
Detailed explanation-2: -38% of the population has O positive blood, making it the most common blood type.
Detailed explanation-3: -In order to be group O, you need both parent cells to be O. But group O is still more common simply because it is the ancestral form. The A and B mutations appeared in the last 20, 000 years and haven’t spread through the population yet.
Detailed explanation-4: -The O blood type is the most common globally and is carried by nearly 70% of South Americans. It is also the most common blood type in Canada and the United States.