NEET 2026 (cancelled) · Question 132 · Class 12

Biotechnology: Principles and Processes

132. Identify the correct sequence of steps in each cycle of Polymerase Chain Reaction :

  1. (A)Denaturation → Extension → Annealing
  2. (B)Denaturation → Annealing → Extension
  3. (C)Annealing → Denaturation → Extension
  4. (D)Extension → Annealing → Denaturation

The NCERT line that answers it

Verbatim line

Each cycle has three steps: (i) Denaturation; (ii) Primer annealing; and (iii) Extension of primers

Chapter
Biotechnology: Principles and Processes
Section
9.3.3 Amplification of Gene of Interest using PCR
Page
11
Words matched
15 of 15

The answer appears as a continuous sentence in NCERT. This is that sentence.

How this line gives the answer

0, emb=1.0, combined=1.0). Verified: high — The span explicitly lists the three steps in the correct order: Denaturation, Primer annealing, and Extension, which directly matches option B.

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Question text is reproduced from the published NEET 2026 (cancelled) paper for study and commentary. NCERT text is quoted, not redistributed; textbooks remain at ncert.nic.in. Our mapping method, including its measured error rates, is published at /methodology.