What is a latent phage?

A latent phage, also known as a temperate phage, is a type of bacteriophage that can enter a dormant state within a bacterial host. Instead of immediately replicating and causing cell lysis, the phage integrates its genetic material into the host's genome, becoming a prophage. This latent phase allows the phage to be replicated along with the host's DNA during cell division, potentially reactivating under certain conditions to enter the lytic cycle. This ability to alternate between lytic and lysogenic cycles gives latent phages a unique role in bacterial evolution and ecology.