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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?
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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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