Laboratory Bio-Techniques · Zoology

During which PCR step do primers bind to the template DNA?

  1. Denaturation
  2. Primer annealing
  3. Extension
  4. Termination
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Correct answer: Primer annealing

Annealing occurs at a lower temperature (typically 50–65 °C), allowing primers to bind to their complementary sequences on the template DNA. This step determines the specificity of PCR amplification.

Difficulty: Medium Question 4 of 20

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