UPSC Prelims 2019 – Question 99

Q99. What is the Cas9 protein that is often mentioned in the news?

(a) A molecular scissors used in targeted gene editing.
(b) A biosensor used in the accurate detection of pathogens in patients.
(c) A gene that makes plants pest-resistant.
(d) A herbicidal substance synthesized in generally modified crops.

Answer: A

• CRISPR Cas9 is an acronym for “Clustered Regularly Interspaced Short Palindromic Repeats.” CRISPR genome engineering technology enables scientists to easily and precisely edit the DNA of any genome

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