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CGP EDU Academic Team
Published on: August 21, 2026
Recombinant DNA bearing ampicillin resistance gene is passed in E.coli. The latter are spread on agar plates containing ampicillin. Then:
Text Solution
Verified by ExpertsThe correct answer is:
A
The recombinant DNA carries an ampicillin resistance gene (ampᴿ). When E. coli cells are spread on agar containing ampicillin:
Transformed cells (with recombinant plasmid) → resistant → survive and grow.
Untransformed cells (without plasmid) → sensitive → killed by ampicillin.
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