Cell then dies. They are thought to be enveloped viruses with - RNA genomes. See class handout, also figure 8.15 and related text. A is needed for adsorption and entry. Coat protein is synthesized, accumulates in quantity, self-assembles around RNA to form new virions.
Lytic step releases progeny phage.
Icosahedral head, tail with contractile sheath, lysozyme at tip of tail, fibers, base plate, etc. Very complex morphology. View T4 morphology Virus DNA is injected, easily enters host. One of the early proteins specifically blocks host sigma. DNA replication occurs on linear molecule.