If a single bacterial cell that is sensitive to the antibiotic vancomycin is placed in a grown medium that contains vancomycin,

Question

If a single bacterial cell that is sensitive to the antibiotic vancomycin is placed in a grown medium that contains vancomycin, it will die. Now consider another single bacterial cell, also sensitive to vancomycin, that is allowed to divide for many generations to become a larger population. If this population is placed into vancomycin-containing growth medium, some of the bacteria will not die, and indeed, they will grow. Why do you see growth in this case, but not with the transferred single cell?

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