Question:medium

Which of the following does not lead to genetic manipulation of DNA?

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Supercoiling changes DNA topology but does not change genetic information, unlike recombination, replication, or transcription.
Updated On: Feb 19, 2026
  • Recombination
  • Replication
  • Transcription
  • Supercoiling
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The Correct Option is D

Solution and Explanation

Step 1: Genetic manipulation processes.
Genetic manipulation encompasses processes such as recombination, replication, and transcription, which modify, duplicate, or employ genetic information.
Step 2: Role of recombination, replication, and transcription.
- Recombination: Exchanges DNA segments, thereby altering genetic material.
- Replication: Duplicates DNA, ensuring the transmission of genetic material.
- Transcription: Converts DNA into RNA, a critical stage in gene expression.
Step 3: Role of supercoiling.
Supercoiling is a structural alteration that condenses DNA but does not directly change or manipulate the DNA sequence. Its function is limited to influencing packaging and accessibility.
Step 4: Conclusion.
Consequently, supercoiling is not classified as genetic manipulation.
Final Answer: \[ \boxed{\text{The correct answer is (D) Supercoiling.}} \]
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