If a recombinant DNA bearing gene for ampicillin resistance…

Biology Biotechnology Principles and Processes Single Correct MCQ

Published on: August 21, 2026

If a recombinant DNA bearing gene for ampicillin resistance if transferred into E.Coli cells and the host cells are spread on agar plates containing ampicillin, then :-

both transformed and untransformed recipient cells will die

both transformed and untrasformed recipient cell will be grow

tranformed recipient cells will grow and untransformed recipient cells will die

transformed recipient cells will die and untransformed recipient cells will grow

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The correct answer is:

Because only the bacteria that have taken up the recombinant DNA with the ampicillin resistance gene (ampᴿ) can survive in the presence of ampicillin, while non-transformed cells lack resistance and get killed.

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