Q131 / 180 · NEET 2025 · Zoology

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

  • A
    $\mathrm{N}^2$
  • Correct answer
    B
    $2^n$
  • C
    $2 n+1$
  • D
    $2 \mathrm{~N}^2$

Solution

PCR i.e., polymerase chain reaction amplifies DNA as per the equation $2^n$, where ' $n$ ' refers to number of cycles. Thus, say, if 3 PCR cycles will run, then $2^3$ i.e., $2 \times 2 \times 2 \Rightarrow 8$ DNA fragments will be formed.

Hence, the correct answer is option: 'B'.

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