Question

The lytic cycle in the transduction process refers to:

• A. The viral nucleic acid directs the synthesis of new viral parts after which the parts are assembled and the bacterial cell bursts to release the new viruses
• B. The viral DNA attaches to the chromosome and replicates with it during successive multiplication
• C. The viral DNA remains free in the cytoplasm as a prophage and replicates independently
• D. The DNA segments carry the genes required for transposition

Hint:

Lytic cycle: infect $\rightarrow$ replicate $\rightarrow$ lyse. Lysogenic cycle: integrate $\rightarrow$ dormant $\rightarrow$ may induce.

Answer 1

The Correct Option is A

Step 1: Concept
Bacteriophage life cycles: lytic vs. lysogenic.

Step 2: Meaning
In the lytic cycle, the phage takes over the host's biosynthetic machinery, produces viral progeny, and lyses the cell.

Step 3: Analysis
(A) correctly describes the lytic cycle: viral nucleic acid directs synthesis of viral components $\rightarrow$ assembly $\rightarrow$ cell lysis $\rightarrow$ release. (B) describes lysogeny (prophage integration). (C) is incorrect (prophage normally integrates into the chromosome). (D) describes transposons.

Step 4: Conclusion
The lytic cycle is characterised by viral replication, assembly, and lysis of the host cell. Final Answer: (A)