Published by:
CGP EDU Academic Team
Published on: August 21, 2026
The normal E-coli cell carries resistance gene against:
Text Solution
Verified by ExpertsThe correct answer is:
D
The normal E. coli strain used in cloning experiments (without any engineered plasmids) does not naturally carry resistance genes for antibiotics like:
• Ampicillin
• Chloramphenicol
• Tetracycline
Antibiotic resistance genes are usually introduced into plasmid vectors like pBR322 for selection purposes, not present in normal bacterial cells.
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