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Which of the promoter requires a low level of cI gene for its activation?

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in Genetic Engineering by (118k points)
Which of the promoter requires a low level of cI gene for its activation?

(a) PR

(b) PL

(c) PRE

(d) PRM

The question was posed to me by my school teacher while I was bunking the class.

My question is taken from Bacteriophage Lambda in section Other Vector Systems for E of Genetic Engineering

1 Answer

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Best answer
Correct answer is (d) PRM

Easy explanation: The promoter requiring low level of cI gene for its activation is PRM (Promoter for repressor maintenance). It is inactivated by high levels of the cI gene.

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