Variation

• What is variation?

  differences in individuals of the same species
• Two types of variation?

  discontinuous and continuous
• what is continuous variation?

  Variation from combination of multiple genes and environmental factors
• Examples of continuous variation?

  Height and weight
• Graph for continuous?

  Bell shape curve
• Can you do a punett square for continuous?

  No -> external factors too not just genes
• Continuous = numbers
• What is discontinuous variation?

  variation caused by one gene
• Examples of discontinuous?

  tongue rolling, ear lobes and blood group
• What type of variation can be caused by environmental factor?

  continuous
• What type of variation can’t be affected by environmental factors?

  Discontinuous
• Can you do a punett square for discontinous?

  yes -> genes
• Environmental factors that could affect continuous variation:

  • Nutrients in area
  • Temperature
  • pH levels
  • Oxygen
  • Parasites
  • Disease
  • pollut
  • Predation
  • Food