EVERYDAY SCIENCE

Detailed explanation-1: -Lysogenic cycle. The lysogenic cycle allows a phage to reproduce without killing its host. Some phages can only use the lytic cycle, but the phage we are following, lambda ( ), can switch between the two cycles.

Detailed explanation-2: -Lysogenic Cycle The virus remains dormant until host conditions deteriorate, perhaps due to depletion of nutrients; then, the endogenous phages (known as prophages) become active. At this point they initiate the reproductive cycle, resulting in lysis of the host cell.

Detailed explanation-3: -During the lysogenic cycle, instead of killing the host, the phage genome integrates into the bacterial chromosome and becomes part of the host. The integrated phage genome is called a prophage. A bacterial host with a prophage is called a lysogen.

Detailed explanation-4: -Typically, viruses can undergo two types of DNA replication: the lysogenic cycle or the lytic cycle. In the lysogenic cycle, the DNA is only replicated, not translated into proteins. In the lytic cycle, the DNA is multiplied many times and proteins are formed using processes stolen from the bacteria.