10/10/2011

3.34- Causes of mutation

Mutation- change in base sequence

  1. Radiation
    • Ionising radiation (x-rays, gamma rays)
    • UV-B rays which can cause skin cancer
  2. Chemicals-  
    • Tars in tobacco- causes cancer
    • Chemicals that cause mutations are called Mutagens
    • Chemicals that cause cancer and mutations are called Carcinogens

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