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Excision of the lamda phage genome from bacterial genome requires IHF and _______________

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Excision of the lamda phage genome from bacterial genome requires IHF and _______________

(a) Integrase from phage and XIS from bacteria

(b) FIS from phage and XIS from bacteria

(c) FIS from phage and INT from bacteria

(d) XIS from phage and FIS from bacteria

The question was posed to me in final exam.

The query is from Site-Specific Recombination in division Genetic Recombination of Cytogenetics

1 Answer

+1 vote
by (1.6m points)
Right choice is (d) XIS from phage and FIS from bacteria

Explanation: Excision of the genome of lamda phage from the bacterial genome requires IHF and XIS that is coded by the bacteriophage. It also requires the FIS coded by the bacterium.

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