DNA polymerase enzyme for PCR is isolated from bacteria, Thermus aquaticus, because:
Correct answer: B. It can withstand high denaturation temperature
- A. It can work at high speed
- B. It can withstand high denaturation temperature
- C. It can withstand low denaturation temperature
- D. It can be used again and again
Explanation
DNA polymerase from Thermus aquaticus (Taq polymerase) is thermostable, so it does not denature at the high temperatures (-95 °C) used during the PCR denaturation step.
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