Question

Which of the following statement is INCORRECT regarding blood group B?

• A. It shows two types of genotypes.
• B. Antibody 'a' is present on the surface of WBCs
• C. Antigen B is present on the surface of RBCs.
• D. They can receive blood from B and O blood groups.

Hint:

Remember where antibodies are found and what the surface of red blood cells carries.

Answer 1

The Correct Option is B

Step 1: Understanding the Concept
In the ABO system, antigens sit on red blood cells and antibodies float in plasma.

Step 2: Check the statements
Group B has two genotypes, so A is true. Antigen B is on the RBC surface, so C is true. A person of group B can receive B and O blood, so D is true.

Step 3: Find the wrong one
Antibody a (anti-A) is present in the plasma, not on the surface of WBCs, so B is incorrect.

Final Answer:
The incorrect statement is that antibody a is on the surface of WBCs. \[ \boxed{\text{(B) }\text{Antibody 'a' is present on the surface of WBCs}} \]