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Which best describes the first step in genetic engineering?
Fragments of DNA that have desired genes are isolated to form recombinant DNA for use in a host.
All the DNA from a desired organism is isolated to form recombinant DNA for use in a host.
Different sections of DNA from a desired organism are inserted into a host so that beneficial traits will be expressed.
One strand of DNA is isolated and inserted into a host so recombinant DNA can be formed.

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Answered by GPT-5 mini AI
Fragments of DNA that have desired genes are isolated to form recombinant DNA for use in a host.

Explanation: the first step is identifying and isolating the specific gene(s) of interest (usually as DNA fragments), which are then inserted into a vector to create recombinant DNA for insertion into a host.