Viruses also Contain genetic material,that could either RNA or DNA
1. No virus contain both DNA and RNA
2. Virus is a nucleoprotein and genetic material is infectious.
- Plant infecting virus :(ss RNA)
- Animal infecting virus:(ss/ds RNA or ds DNA
- Bacteriophage has (ds DNA)
- Capsomeres help in protection of nucleic acids
- Viruses disease like : Mumps ,small pox,herpes,and influenza
- AIDS is caused by HIV virus
- Plant diseases: 1. Mosaic formation
- Leaf rolling
- Curling
- Yellowing
- Vein clearing
- Dwarfing
- Stunted growth
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| Small pox |
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| Herpes |
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| Mumps |
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| Influenza virus |
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| Genital Herpes |
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| Mumps |
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| Leaf rolling and curling |
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| Vein clearing |
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| Mosaic formation |
1. Virus means : venom or poisonous fluid
2. Virus termed given by - Pasteur DJ Ivanowsky
3. Virus could be crystalised- W.M Stanley
4. Contagious vivum fluidum (infectious living fluid): M.W Beijerinek
5. Virus crystal mainly consist of protein
6. Virus are obligated parasite.
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