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What is the role of a vector in genetic engineering?

Answer and explanation

Correct answer: To carry the desired gene into a host cell

The governing concept is the use of a cloning vector in recombinant DNA technology. A vector is a DNA molecule, commonly a bacterial plasmid or a modified viral DNA, that carries a selected gene into a suitable host cell. It usually contains an origin of replication and may include selectable markers, so the inserted DNA can be copied and the cells containing it can be identified. Therefore, option A is correct: the vector transports the desired gene into the host and helps maintain or replicate it. Option B describes proteolytic enzymes, option C is unrelated to gene transfer, and option D describes a function associated with photosynthetic pigments rather than vectors.

Related tags

Cloning VectorPlasmidGene TransferCloning VectorsPrinciples Of BiotechnologyBiotechnologyClass 11 Mcq

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