Viruses contain either RNA or DNA template molecules, normally encased in a protective coat of protein or lipoproteins. The viral nucleic acid is able to organize its own replication only within suitable host cells. They reproduce under most circumstances via fission. They replicate by fission.
Fungi are a form of primitive vegetable life.
Examples include mushrooms, yeasts, and molds. They are plant-like eukaryotes with cell walls. They can reproduce both sexually and asexually. All of the above organisms can be modified using modern genetic engineering techniques. In addition, it is possible through recombinant technology for a benign organism to be given a gene encoding a toxin or other pathogenic substance produced by the pathogenic organism found at the links above.