Biology Biotechnology Principles and Processes All Topic Question For Revision Test Single Correct MCQ
Published on: August 13, 2026

Which one of the following is a correct statement regarding DNA polymerase used in PCR?

A
It is used to ligate introduced DNA in recipient cell.
B
It serves as a selectable marker.
C
It is isolated from a virus.
D
It remains active at high temperature induced denaturation of double stranded DNA.

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Text Solution

Verified by Experts
The correct answer is:
D

In PCR, the DNA polymerase used is Taq polymerase, which is thermostable. It can withstand the high temperatures (~94–95°C) used for DNA denaturation without getting denatured itself.

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