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Give a brief account of viruses with res...

Give a brief account of viruses with respect to their structure and nature of genetic material. Also name four common viral diseases.

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Viruses are made up of Nucleic acid and protein. The Nucleic acid could be either RNA or DNA. The protein part is called capsid which encloses the Nucleic acid. Tobacco Mosaic virus and Human Immuno Virus (HIV) contains RNA as genetic material. Bacteriophages, contain DNA as genetic material.
Common viral diseases are - 1) Tobacco Mosaic virus.
2) Potato spindle Tuber disease.
3) Human Immuno virus.
4) Scrapie disease of sheep.
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