Laboratory Bio-Techniques · Zoology

Which enzyme is essential for DNA synthesis during PCR?

  1. DNA ligase
  2. Restriction endonuclease
  3. Taq DNA polymerase
  4. RNA polymerase
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Correct answer: Taq DNA polymerase

Taq DNA polymerase is a thermostable enzyme that synthesizes DNA at high temperatures. It is crucial for PCR because it remains active after repeated heating cycles.

Difficulty: Medium Question 2 of 20

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