AP BIOLOGY

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: -In the lysogenic cycle, the bacteriophage DNA lies practically dormant. However, whenever the bacteria divides, the DNA of the virus is inadvertently copied. In this way, the virus can continue replicating within its host. As long as the bacteria are successful, the virus may remain dormant.

Detailed explanation-3: -Not all animal viruses undergo replication by the lytic cycle. There are viruses that are capable of remaining hidden or dormant inside the cell in a process called latency.

Detailed explanation-4: -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.