Variation + Evolution

• Mutation is a change in the DNA sequence of an organism.
• Most mutations are neutral - they do not affect survival or reproduction so there will be no selection pressure on them.
• Most mutations don't affect the organism's phenotype
• Beneficial mutations can make individuals more resistant to disease or able to run faster
• Natural selection


  The process by which an organism has beneficial traits which are better suited to the environment than others, resulting in them surviving.
• Evolution

  The change in the inherited characteristics of a population over multiple generations, which can lead to the development of new species
• The 7 classifications of organisms are:

  • Kingdom
  • Phylum
  • Class
  • Order
  • Family
  • Genus
  • Species