What is the most efficient procedure that scientists can use to obtain more recombinant DNA for a particular trait?

To obtain many copies of recombinant DNA, scientists clone it by placing it in a biological vector, such as a plasmid, that can replicate inside a host cell. Cutting the DNA into fragments or separating it with electrophoresis does not make additional copies, and simply isolating more DNA does not efficiently amplify it. The most efficient procedure is to clone the recombinant DNA in a biological vector.

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