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What can be done to a foreign gene before inserting it into a vector in cloning?

Answer and explanation

Correct answer: It can be cut with a suitable restriction enzyme

The governing concept is preparation of an insert for recombinant-DNA cloning. Before a foreign gene is inserted into a vector, the gene and the vector can be treated with the same suitable restriction enzyme. This produces compatible sticky ends, or suitable blunt ends when applicable, so that the insert can align with the opened vector. DNA ligase then joins the aligned molecules by forming phosphodiester bonds. Hence option A is correct. The gene is not converted into water, a leaf, or a metal; those choices describe impossible transformations and do not represent molecular cloning steps. The exact enzyme must be selected so the desired gene is not damaged and the ends are compatible.

Related tags

Foreign GeneCutting Of DnaCloningProcesses Of Recombinant Dna TechnologyBiotechnologyClass 11 Mcq

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