Final answer:
Nonpathogenic V. cholerae can acquire the cholera toxin gene through transformation.
Explanation:
Nonpathogenic V. cholerae can acquire the cholera toxin gene by transformation. This process involves the uptake of DNA from the environment, such as when non-immune V. cholerae cells are lysed and release their DNA, which can then be taken up by neighboring competent V. cholerae.
Learn more about Horizontal gene transfer here:
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