Directions : For the Assertion (A) and Reason (R) below, choose the correct alternative Assertion (A) : There is no vaccine for AIDS. Resson (R) : The AIDS virus changes its genetic code
Correct Answer: Both A and R are true and R is the correct explanation of A.
Explanation:
A vaccine contains the inactivated germs of the disease. But the AIDS virus changes its genetic code and so on vaccine has been invented for it.
