Thus, the genes next to the virus in the lysogenic state can be carried to the next cell which the virus infects. Some animal viruses can behave in a manner similar to lysogeny and become inserted into the DNA of the host. Some cancer causing viruses may do this C. Animal Virus life cycles are similar but there are differences depending on whether the virus carries DNA or RNA and if so, whether it is a positive or a negative strand. Fig 13.14- TEM of entry of Herpes simplex into a cell. Uncoating - escape of the viral nucleic acid fro the capsid.
Enzymes degrade the proteins of the capsid.
Fig 13.15 Multiplication of a DNA containing virus a. The viruses are released from the host cell, either by budding out of it or by lysing it. The positive strands are then used as a template for the synthesis of negative strands. This mRNA directs the synthesis of viral proteins and enzymes and serves as a template for the production of more negative strands which will incorporated into the new virion. The envelope also contains virus-specified proteins.