Question

UPSC Prelims 2019 Question:

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

  1. 1. A molecular scissors used in targeted gene editing
  2. 2. A biosensor used in the accurate detection of pathogens in patients
  3. 3. A gene that makes plants pest-resistant
  4. 4. A herbicidal substance synthesized in genetically modified crops

Answer (Detailed Solution Below)

Option 1: A molecular scissors used in targeted gene editing

Detailed Solution

Explanation: 

  • CRISPR-Cas9 is a unique technology that enables geneticists to edit parts of the genome. Genome editing (also called gene editing) is a group of technologies that give scientists the ability to change an organism's DNA. These technologies allow genetic material to be added, removed, or altered at particular locations in the genome.

  • CRISPR-Cas9 has a lot of potential as a tool for treating a range of medical conditions that have a genetic component, including cancer, hepatitis B or even high cholesterol.

Therefore, option (1) is the correct answer.

Subject: Science & Technology | Health and Diseases

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Tags: Analytical factual UPSC Prelims 2019 UPSC Prelims 2019 Question

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