A) By examining the cells with an electron microscope
B) By using radioactive tracers to locate the plasmids
C) By exposing the bacteria to an antibiotic that kills the cells lacking the plasmid
D) By producing antibodies specific for each bacterium containing a recombinant plasmid
Correct Answer: C
Solution :
[c] Only transformed bacteria containing plasmids coding for resistances to antibiotics will be able to survive in a medium containing antibiotics. Bacteria lacking the plasmids will be destroyed by the antibiotic.
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