Selective Breeding

• What is meant by selective breeding?

  Selective breeding is also called artificial selection.
• What is the impact of selective breeding on food plants and domesticated animals?

  Selective breeding impacts food plants and domesticated animals by enhancing desirable traits.
• What is one disadvantage of selective breeding?

  One disadvantage of selective breeding is the risk of inbreeding.
• How did humans utilize wolves through selective breeding?

  Humans selectively bred wolves to produce dogs that serve various useful purposes.
• What are two benefits of having wolves as companions for humans?

  Wolves can alert humans to threats and provide warmth and companionship.
• Name one example of selective breeding in domestic dogs.

  Domestic dogs have been selectively bred to have a gentle nature.
• What is an example of selective breeding in food crops?

  Food crops such as wheat have been selectively bred to be resistant to disease.
• How have cows been selectively bred?

  Cows have been selectively bred to produce more meat or milk.
• What is one purpose of selectively breeding certain plants?

  Certain plants have been selectively bred to produce large or unusual flowers.
• Describe the stages of selective breeding for larger cows.

  1. Select a mixed population of cows.
  2. Choose the largest male and female.
  3. Breed them together.
  4. Select the largest offspring and breed them.
  5. Repeat over many generations until all offspring are large.
• What is the consequence of inbreeding in selective breeding?

  Inbreeding can cause some breeds to be prone to disease or inherited defects.
• What are some inherited disorders that can develop in dog breeds due to selective breeding?

  Inherited disorders in dog breeds can include joint problems, heart disease, or epilepsy.
• What should students remember about selective breeding for exams?

  • Definition of selective breeding (artificial selection)
  • Impact on food plants and domesticated animals
  • Disadvantages such as inbreeding
  • Examples of selective breeding in dogs, crops, and cows
  • Stages of selective breeding process