Science and Technology
2019
Biotechnology Basics
Genetic Engineering
What is Cas9 protein that is often mentioned in news?
C.A gene that makes plants pest-resistant
A.A molecular scissors used in targeted gene editing
B.A biosensor used in the accurate detection of pathogens in patients
D.A herbicidal substance synthesized in genetically modified crops
Correct Answer: Option A
Cas9 (CRISPR associated protein 9) is a protein crucial for the immunological defense of certain bacteria against DNA viruses.
In genetic engineering, Cas9 is widely used as molecular scissors to cut DNA at specific locations. This allows scientists to alter a cell's genome with precision.
Therefore, Cas9 is a molecular scissors used in targeted gene editing.
Hence, option a is correct.
Sources:
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