Which one is a true statement regarding DNA polymerase used in PCR?
Correct answer: D. It remains active at high temperature.
- A. It is used to ligate introduced DNA in recipient cells.
- B. It serves as a selectable marker.
- C. It is isolated from a virus.
- D. It remains active at high temperature.
Explanation
In PCR, Taq polymerase is used which is obtained from Thermus aquaticus bacteria. It is a relatively thermostable enzyme thus used in PCR as during the process the step involving denaturation of DNA strands requires high temperature.
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