gs1medium

What is the Cas9 protein that is often mentioned in the news?

  1. A.A molecular scissors used in targeted gene editing.
  2. B.A biosensor used in the accurate detection of pathogens in patients.
  3. C.A gene that makes plants pest-resistant.
  4. D.A herbicidal substance synthesized in generally modified crops.
▶ Answer & Explanation

Correct answer: A. A molecular scissors used in targeted gene editing.

Cas9 is a key enzyme in the CRISPR-Cas9 system, a revolutionary technology for gene editing. It functions by cutting specific DNA sequences, allowing for the precise insertion, deletion, or modification of genes. This targeted approach has significant implications for research, medicine, and agriculture.

Source: UPSC gs1 2019

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