Published by:
CGP EDU Academic Team
Published on: August 11, 2026
If DNA is inserted within the coding sequence of β-galactosidase enzyme then
Text Solution
Verified by ExpertsThe correct answer is:
A
When DNA is inserted into the β-galactosidase (lacZ) gene, it causes insertional inactivation, so recombinant bacteria cannot produce functional enzyme and give white colonies, while non-recombinants produce blue colonies in the presence of chromogenic substrate (like X-gal).
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