Select the incorrect statements with reference to Rh grouping. Choose the answer from the options given below:
- A and B only
- C and D only
- A and E only
- B and C only
Answer
(3) A and E only
Solution
As per NCERT,
B – correct: nearly 80% of humans are Rh+ve (have the Rh antigen on RBCs).
C – correct: the Rh group should also be matched before blood transfusion.
D – correct: Rh incompatibility occurs when an Rh-ve mother carries an Rh+ve foetus.
A – incorrect: erythroblastosis foetalis occurs with an Rh-ve mother and an Rh+ve foetus, not the reverse.
E – incorrect: anti-Rh antibodies are given to the mother immediately after the delivery of the first child.
∴ Incorrect statements: A and E
Answer: (3)