Discussion
Assertion (A) : In disputed paternity and maternity cases, it is not possible to determine the blood group of the child.
Reason (R) : The blood groups are not inherited as per Mendelian law of inheritance.
Answer: C
Both statements are incorrect. In disputed paternity and maternity cases the blood group of the child can be determined and compared with that of the parents, so the assertion is wrong. The blood groups are inherited according to Mendel's laws, so the reason is also wrong, and it is this inheritance that makes blood grouping useful to exclude a parent.
The options that call either statement correct are wrong. Option B takes the reason as correct, option A takes both, and option D takes the assertion.
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