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Question: Answered & Verified by Expert
If pBR322 cloning vector is cut by Pvu I enzyme for the formation of rDNA then which of its marker gene helps in the selection of recombinants?
BiologyBiotechnology - Principles and ProcessesNEET
Options:
  • A ampR gene
  • B tetR gene
  • C gal gene
  • D Both (A) and (B)
Solution:
2852 Upvotes Verified Answer
The correct answer is: Both (A) and (B)
pBR 322 has two selectable markers which are amphicillin and tertacyclin resistant genes. Amphicilin resistant gene has two restriction enzyme recognition site, Pvu I and Pst I. If the vector is cut by Pvu I enzyme for formation of rDNA than amphicillin resistant gene becomes inactive due to insertional inactivation.

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