Nontoxic strains of Vibrio cholerae can become toxic when they are in the human intestines with toxic bacteria

Question

..... this suggests that the toxin genes are required by:

A. Prions

B. Transduction

C. Host enzymes

D. Reverse transcriptase

E. None of the above

Answer 1

 Do you mean acquired. The best answer is B. What's the reference for that concept?