Once a prophage is present in a bacterial genome, viral genes are reproduced every time the bacterium multiplies. Expression of viral genes, however, is inhibited by a repressor protein. Cell stress can induce the formation of protease that degrade the repressor. What will result?

The virus will enter the lytic cycle.

Explanation:

When the viral genomes integrate into the host chromosome it is called a prophage. This virus genome replicates with the host genome and this cycle is called the lysogenic cycle.

In the lysogenic cycle expression of the viral genome does not occur because it is inhibited by repressor proteins. One of the repression protein is degraded by protease the viral DNA gets transcribed and produces viral proteins which are important to make new phages. These new phages then released from cells by lysing the bacterial cell. This cycle is called the lytic cycle.

So once protease gets degrade virus will ender into the lytic cycle.

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