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Which gene is required for the lysogenic phage to be adopted?

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in Genetic Engineering by (118k points)
Which gene is required for the lysogenic phage to be adopted?

(a) cI

(b) cII

(c) cIII

(d) All the three genes are interrelated

I have been asked this question during an interview for a job.

My question is from Bacteriophage Lambda topic in division Other Vector Systems for E of Genetic Engineering

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Correct answer is (d) All the three genes are interrelated

The best I can explain: All three genes are interrelated. The cII gene is protected from proteases by cIII gene and it further promotes the expression of cI gene. cI gene is necessary for silencing of rest of the lambda genome. cII is most important but as it related with other two as well, thus they all are required for lysogenic mode.

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