Medium· Polymerase Chain Reaction (Denaturation, Annealing, etc.)· +4 / −1
Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).
**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: