What is Cas9 protein that is often mentioned in news?

What is Cas9 protein that is often mentioned in news?

[UPSC Civil Services Exam – 2019 Prelims]

(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 genetically modified crops

Answer: (a)

Explanation:

CRISPR technology refers to a gene-editing technique that can modify genetic expression.
This method involves using the Cas9 protein as molecular scissors in targeted DNA after scanning the genome for the correct location through Clustered Regularly Interspaced Short Palindromic Repeats (CRISPR).
Cas9 is an enzyme that can cut both strands of the DNA double helix at specific sites in the genome.
It is a bacterial RNA-guided endonuclease that uses RNA base pairing to locate and cleave targeted DNA.

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Tenth Schedule of Constitution of India: Important Question

The provisions in Fifth Schedule and Sixth Schedule in the Constitution of India are made in order to

Under which Schedule of the Constitution of India can the transfer of tribal land to private parties for mining be declared null and void?

The Ninth Schedule was introduced in the Constitution of India during the prime ministership of

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