Published by:
CGP EDU Academic Team
Published on: August 13, 2026
In presence of chromogenic substrate recombinant bacteria gives
Text Solution
Verified by ExpertsThe correct answer is:
B
In blue-white screening, recombinant bacteria have an inactivated β-galactosidase gene and cannot break down the chromogenic substrate (X-gal). Therefore, they form white/colourless colonies.
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