Home Biology Biotechnology Principles and Processes NCERT Selection of recombinants due to inactivatio…
Biology Biotechnology Principles and Processes NCERT Single Correct MCQ
Published on: August 13, 2026

Selection of recombinants due to inactivation of antibiotics is a cumbersome procedure because

A
It requires plating of one plate having certain antibiotics
B
It requires plating of Iwo plates having same antibiotics
C
It requires simultaneous plating on two plates having different antibiotics
D
None of these

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The correct answer is:
C

In insertional inactivation using antibiotic resistance genes (e.g., pBR322), recombinants are identified by checking growth on two different antibiotic plates. This requires replica plating and comparison, making the process cumbersome.

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