Which choice is an example of "recombinant DNA"?

Question

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Recombinant DNA refers to the manipulation of DNA molecules to create new combinations that do not exist in nature. In this case, the combination of a bacterial plasmid and a human gene is an example of recombinant DNA technology. This can be achieved through the use of restriction enzymes to cut and splice DNA sequences together, as well as other molecular biology techniques like gene cloning and genetic engineering. Amplification by PCR (A) and DNA removal from a cell (B) are not examples of recombinant DNA technology, since they only involve the replication or isolation of existing DNA molecules. Cutting DNA with a restriction enzyme (C) is a step in the process of creating recombinant DNA, but it is not sufficient on its own to generate new genetic combinations.

Which Choice Is an Example of "Recombinant DNA