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Question
Alpha complementation is an indicator of lacZ system. Which of the statement is incorrect for it?
Options:
A .  One portion of the lacZ gene known as minigene is present in the plasmid
B .  Another portion is present in the host itself
C .  If they both are allowed to combine in the presence of IPTG, X-gal and ampicillin, blue colonies are observed
D .  If insert is also present along with host and plasmid, it results in the formation of blue colonies
Answer: Option D
Answer: (d).If insert is also present along with host and plasmid, it results in the formation of blue colonies

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