NEET 2026 (cancelled) · Question 138 · Class 12

Biotechnology: Principles and Processes

138. Insertion of a foreign DNA at BamHI site in an E. coli cloning vector pBR322 results in the loss of antibiotic resistance towards :

  1. (A)Ampicillin and tetracycline
  2. (B)Ampicillin
  3. (C)Tetracycline
  4. (D)Gentamycin

The NCERT line that answers it

Verbatim line

For example, you can ligate a foreign DNA at the BamH I site of tetracycline resistance gene in the vector pBR322.

Chapter
Biotechnology: Principles and Processes
Section
9.2 Tools of Recombinant DNA Technology
Page
8
Words matched
51 of 51

The answer appears as a continuous sentence in NCERT. This is that sentence.

How this line gives the answer

0, emb=1.0, combined=1.0). Verified: high — The span explicitly states that ligating foreign DNA at the BamHI site of the tetracycline resistance gene in pBR322 results in loss of tetracycline resistance, which directly answers the MCQ.

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Question text is reproduced from the published NEET 2026 (cancelled) paper for study and commentary. NCERT text is quoted, not redistributed; textbooks remain at ncert.nic.in. Our mapping method, including its measured error rates, is published at /methodology.