Answer:
It begins with the attachment of the virus to a host cell.
The DNA or RNA of the virus enters the cell and integrates with the DNA of the host cell, and a provirus is formed.
The provirus replicates with the host cell.
There are no symptoms until the virus enters the lytic cycle.
The virus enters the lytic cycle and symptoms appear.
Explanation:
The bacteriophages infect bacteria with the help of two cycles, that is, lytic and lysogenic cycle.
• It involves the incorporation of the viral genome into the genome of the host cell, infecting it from within.
• It is a method by which a virus can replicate its DNA by utilizing the cell of the host.
• In the lysogenic cycle, it is only the DNA which gets replicated and does not get translated into proteins.
• In this cycle, the reproduction of virus comprises the fusion of the nucleic acid of a bacteriophage with that of a host, which is succeeded by proliferation of the prophage produced.
Thus, the viral DNA gets integrated into the DNA of the host in the lysogenic cycle, however, the viral genes are not expressed.
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