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Solution


Q.

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).           [2022]
Assertion (A): Polymerase chain reaction is used in DNA amplification.
Reason (R): The ampicillin resistant gene is used as a selectable marker to check transformation.

In the light of the above statements, choose the correct answer from the options given below:
1 Both (A) and (R) are correct and (R) is the correct explanation of (A).  
2 Both (A) and (R) are correct but (R) is not the correct explanation of (A).  
3 (A) is correct but (R) is not correct.  
4 (A) is not correct but (R) is correct.  

Ans.

(2)