In Selecting Recombinant Bacteria, Cells Are Chosen That Are Resistant

In selecting recombinant bacteria, cells are chosen that are resistant to a specific antibiotic. How are the bacteria made resistant?

A) Resistance is activated when the cells are provided with the antibiotic
B) Resistance is activated by the recombination event.
C) The antibiotic resistance gene is encoded in the vector.
D) They are pre- selected for the experiment on this basis.
E) The antibiotic resistance gene is encoded on the donor insert.

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