A plasmid contains the gene for tetracycline resistance and a lacZ gene that has a restriction site in it.Foreign DNA has the same restriction site at its ends.Host bacteria are transformed with the recombinant DNA and grown on medium with tetracycline and X-Gal.The host bacteria already contained a ciprofloxacin resistance gene prior to the transformation event.Which gene or substance is acting as a reporter gene?
A) Only lacZ
B) The gene for tetracycline resistance only
C) The gene for ciprofloxacin resistance only
D) The gene for tetracycline resistance and lacZ
E) The genes for tetracycline resistance and ciprofloxacin resistance
Correct Answer:
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