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Which of the following viruses will be useful for transduction?

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Which of the following viruses will be useful for transduction?

(a) T2 phage

(b) T4 phage

(c) T7 phage

(d) Lamda phage

This question was posed to me in final exam.

My enquiry is from Gene Mapping in Bacteria by Transduction in division Genomics : The Mapping and Sequencing of Genomes of Cytogenetics

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Best answer
Right choice is (d) Lamda phage

Explanation: T phages mainly undergo lytic cell cycle, while lamda phages have lysogenic cell cycle. For transduction to occur, the viral genome must integrate within the nucleoid else it will never incorporate bacterial gene within itself. Thus, only lamda phage will be able to help in transduction.

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