THE HUMAN IMMUNE SYSTEM
BLOOD GROUPS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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AB
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A
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B
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O
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Detailed explanation-1: -blood group A – has A antigens on the red blood cells with anti-B antibodies in the plasma. blood group B – has B antigens with anti-A antibodies in the plasma. blood group O – has no antigens, but both anti-A and anti-B antibodies in the plasma. blood group AB – has both A and B antigens, but no antibodies.
Detailed explanation-2: -Therefore, having A+ blood means you have both the A antigen and the Rhesus factor present on your red blood cells. In contrast, having type A-blood means you only have the A antigen present on your blood cells.
Detailed explanation-3: -Type A: Type A blood has RBCs with surface antigen A only.
Detailed explanation-4: -What are antigens? Antigens are surface proteins found on red blood cells. Type O negative blood is the only blood type with no antigens.
Detailed explanation-5: -If someone has blood type A, they must have at least one copy of the A allele, but they could have two copies. Their genotype is either AA or AO. Similarly, someone who is blood type B could have a genotype of either BB or BO. A blood test of either type AB or type O is more informative.