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What is the significance of antibiotic resistance genes in gene cloning?

Options

  1. ATo allow the growth of transformants
  2. BTo visualize the separated DNA fragments
  3. CTo inactivate the foreign DNA
  4. DTo select the recombinants from non-recombinants

Correct answer

D. To select the recombinants from non-recombinants

Step-by-step solution

Normally, the genes encoding resistance to antibiotics such as ampicillin, chloramphenicol, tetracycline or kanamycin, etc., are considered useful selectable markers for E. coli. The normal E. coli cells do not carry resistance against any of these antibiotics

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