Evo 1. The Diversity Of Life, Chapter 26: Introduction to virusses

After a (Bacterio)phage leaves a host cel in the last stage of infection, they can either destroy the host cell or leave it intact.

The infection cycle of a phage that bursts the host cell is called a lytic cycle lysogene cycle( lytic cycle, lysogene cycle ). These cells cannot can( cannot, can ) be reused for DNA replication and cannot can( cannot, can ) reproduce normally. Phages that ONLY undergo a lytic lysogene( lytic, lysogene ) cycle are called virulent temporate( virulent, temporate ) phages.

The infection cycle of a phage that leaves the host cell intact is called a lysogene cycle lytic cycle( lysogene cycle, lytic cycle ). Phages that undergo a lysogene lytic( lysogene, lytic ) cycle are called termporate virulent( termporate, virulent ) phages. The host cell DNA and the phage DNA intergratie and form a prophage viral DNA new phage( prophage, viral DNA, new phage ). These cells can cannot( can, cannot ) reproduce normally. Some prophages viral DNAs new phages( prophages, viral DNAs, new phages ) do produce harmfull substances.

Both the phage genome and enviromental factors can determine the cycle.