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#Question id: 40222


 many cloning vectors, an antibiotic resistance gene is used for ________, while a gene like lacZ (for blue-white color change) is often used for ________.

#Applied Microbiology
  1. screening; selection 
  2.  replication; selection
  3. selection; screening
  4.  screening; replication

Answer:- Option(s): 3


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