Here are the events that occur in the lytic cycle of bacteriophage T4 infection but not the lysogenic cycle:

Lytic Cycle Specific Events:

* Host DNA degradation: The T4 phage immediately begins degrading the host cell's DNA, using its own enzymes. This ensures that the host cell's resources are directed towards producing new phage particles.

* Rapid phage replication: The phage DNA replicates rapidly, producing many copies of itself.

* Production of phage proteins: The phage DNA directs the host cell to synthesize all the necessary proteins for building new phage particles (capsid proteins, tail fibers, etc.)

* Assembly of new phage particles: The phage components self-assemble into new phage particles.

* Lysis of the host cell: The new phage particles burst out of the host cell, destroying it in the process (lysis). This releases the newly formed phages to infect other cells.

Key Differences from the Lysogenic Cycle:

* No integration of phage DNA: In the lysogenic cycle, the phage DNA integrates into the host cell's genome, becoming a prophage. In the lytic cycle, the phage DNA remains separate and replicates independently.

* No dormant state: The phage DNA is not dormant in the lytic cycle. It is actively replicating and producing new phage particles.

* Immediate host cell destruction: The lytic cycle always results in the destruction of the host cell. In the lysogenic cycle, the host cell can survive and continue to replicate, carrying the prophage within its genome.

Summary: The lytic cycle is a rapid and destructive process, leading to the immediate production of new phage particles and the death of the host cell. The lysogenic cycle, on the other hand, is a more passive and dormant process, where the phage DNA integrates into the host genome and replicates along with it.