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What forms after foreign DNA is joined into a cloning vector?

Answer and explanation

Correct answer: Recombinant vector

The direct answer is A: a recombinant vector. A cloning vector is a DNA molecule designed to carry another DNA fragment. First, foreign DNA is selected as the insert. It is placed into a suitable site of the vector, and ligase joins the two DNA parts. Because the final molecule contains DNA from two different sources, it is called recombinant DNA; when the carrier is the vector, it is a recombinant vector. A is correct. B, pure water, contains no joined genetic material. C, chlorophyll, is a pigment involved in photosynthesis and is not produced simply by joining DNA to a vector. D, a starch grain, is a storage structure or starch form and has no connection with vector construction. The recombinant vector can later be introduced into a host and copied if it has suitable features such as an ori. Memory cue: “foreign DNA + vector = recombinant vector.”

Related tags

Recombinant VectorForeign DnaCloning

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