Definition of Lysogeny

Lysogeny is a kind of life cycle in which certain types of bacteria get infected by a bacteriophage. In the process of lysogeny, the genome of the phage is incorporated into the genome of the host and keep on replicating as the cell divides. The phage is in dormant condition and does not produce any progeny.


But as soon as the host is exposed to UV light, the phage gets activated and takes over the cellular machinery of the host and produces new daughter phages, and eventually destroys the host cell and the progeny is released into the surrounding environment.

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