Zoology · Biotechnology: Principles and Processes

NEET (UG) 2025 — Question 85

Polymerase chain reaction (PCR) amplifies DNA following the equation:

Option A:
$N^2$
Option B:
$2^n$
Correct
Option C:
$2^n + 1$
Option D:
$2 N^2$

Answer: B

Step-by-step solution

PCR uses repeated cycles of denaturation, annealing, and extension. Each cycle doubles the number of DNA copies. If one DNA molecule is present initially, after $n$ cycles the number of copies is $2^n$ . Therefore, the correct option is B.

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Exam: NEET (UG) 2025
Paper: 2025 paper
Subject: Zoology
Chapter: Biotechnology: Principles and Processes
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Answer: B

Step-by-step solution

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