Published by:
CGP EDU Academic Team
Published on: August 13, 2026
Recombinant colonies in insertional inactivation are differentiated on the basis of
Text Solution
Verified by ExpertsThe correct answer is:
B
In insertional inactivation, the inserted DNA disrupts the lacZ (β-galactosidase) gene.
• Recombinant colonies → β-galactosidase not produced → white (no blue colour).
• Non-recombinant colonies → β-galactosidase produced → blue colour.
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