3.33: Understand that the Incidence of Mutations can be Increased by Exposure to Ionising Radiation (For Example Gamma Rays, X - Rays and Ultraviolet Rays) and Some Chemical Mutagens (For Example Chemicals in Tobacco)

MUTATION: Rare, Random Change in Genetic Material that Can be Inherited

CHANCES OF MUTATIONS CAN BE INCREASED BY:

IONISING RADIATION

Electromagnetic Spectrums can cause Mutations when they Come into Contact with DNA Molecules or Chromosomes EXAMPLES: Gamma Rays, X - Rays and Ultraviolet Rays

CHEMICAL MUTAGENS

Chemicals can Increase the Rate of Mutations such as Tar in Cigarettes EXAMPLES: Tobacco