Which event occurs in the lysogenic cycle but never in the lytic cycle?
- A. Synthesis of viral coat proteins
- B. Injection of viral nucleic acid into the host
- C. Attachment of the virus to the host cell
- D. Integration of viral DNA into the host chromosome
Explanation
In lysogeny the phage DNA becomes part of the bacterial chromosome as a prophage and is copied silently every time the bacterium divides, which is the one step the lytic cycle has no equivalent of. Attachment and injection begin both cycles, and coat protein synthesis happens in the lytic cycle and in a lysogenic cell only after induction switches it to the lytic pathway.
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