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Which one is a true statement regarding DNA polymerase used in PCR?

  1. A
    It remains active at high temperature
  2. B
    It is used to ligate introduced DNA in recipient cells
  3. C
    It serves as a selectable marker
  4. D
    It is isolated from a virus

Solution & Step-by-step Explanation

The DNA polymerase used in PCR is Taq polymerase, which is isolated from the bacterium Thermus aquaticus. It is unique because it is thermostable, remaining active during the high-temperature denaturation step () of PCR.

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Which one is a true statement regarding DNA polymerase used in PCR?
A
It remains active at high temperature
B
It is used to ligate introduced DNA in recipient cells
C
It serves as a selectable marker
D
It is isolated from a virus

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