Selective Breeding

• What is another term for selective breeding?

  Artificial selection
• What should you be able to explain regarding selective breeding after this video?

  The impact on food plants and animals
• What should you be able to describe regarding selective breeding after this video?

  The disadvantages of selective breeding
• What realization did humans have about wolves thousands of years ago?

  Wolves are useful animals
• Name one way in which wolves were useful to humans?

  Alerting to threats
• What process was used to create dogs from wolves?

  Selective breeding
• What characteristic have domestic dogs been selectively bred for?

  Gentle nature
• What characteristic have food crops like wheat been selectively bred for?

  Disease resistance
• What characteristic have cows been selectively bred to enhance?

  Meat or milk production
• What have certain plants been selectively bred to produce?

  Large or unusual flowers
• What might you be asked to do in the exam regarding selective breeding?

  Describe how it's carried out
• What are the stages involved in selective breeding?

  • Take a mixed population and select the largest male and female
  • Breed these together
  • Select the largest male and female offspring and breed these together
  • Continue over many generations
• What produces variation in the offspring during selective breeding?

  Sexual reproduction
• What is the consequence of breeding closely related animals or plants?

  Inbreeding
• What can inbreeding cause in selectively bred animals and plants?

  Proneness to disease
• What can inbreeding cause in selectively bred animals and plants?

  Inherited defects
• What have dog breeds selectively bred for hundreds of generations developed?

  Inherited disorders
• Name one inherited disorder that is common in selectively bred dogs?

  Joint problems
• Name one inherited disorder that is common in selectively bred dogs?

  Heart disease
• Name one inherited disorder that is common in selectively bred dogs?

  Epilepsy
• What is the definition of selective breeding?

  Humans breeding animals/plants with desired traits
• In what type of social structure do wolves live?

  Packs