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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 have protein capsule and genetic material inside. Viruses are non cellular organisms that are characterized by having an inert crystalline structure outside the living cell. Once they infect a cell they take over the machinery of host cell to replicate themselves killing the host.

Generally protein that infect plants have single standard RNA and Viruses that infect animals have either single or double stranded DNA. Bacteriophage usually have double stranded DNA. Where as TMV contain single stranded RNA. Four common Viral diseases

  • AIDS
  • Mumps
  • Small Pox
  • Harpies

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