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Biology · PYQ NEET UG 2021

हिन्दी

Which of the following is a CORRECT sequence of steps in a PCR (Polymerase Chain Reaction)?

  1. Annealing, Denaturation, Extension
  2. Denaturation, Annealing, Extension
  3. Denaturation, Extension, Annealing
  4. Extension, Denaturation, Annealing

Correct answer · Option 2

Denaturation, Annealing, Extension

Explanation

The three main steps of PCR are Denaturation, Annealing, and Extension in that order.
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