Selective Breeding

• What is another term for selective breeding?

  Artificial selection
• What should you be able to describe by the end of the video on selective breeding?


  The meaning of selective breeding, its impact on food plants and domesticated animals, and its disadvantages
• What are wolves known for in relation to humans?


  They can alert humans to threats and provide protection
• How did humans use selective breeding to produce dogs from wolves?


  By selecting and breeding wolves with desirable traits over thousands of years
• What are four examples of selective breeding mentioned in the video?


  • Domestic dogs bred for a gentle nature
  • Food crops like wheat bred for disease resistance
  • Cows bred for increased meat or milk production
  • Plants bred for large or unusual flowers
• What is the first step in the selective breeding process for large cows?


  Selecting the largest male and female from a mixed population
• What does sexual reproduction produce in the offspring during selective breeding?


  Variation in the offspring
• What is done after selecting the largest male and female offspring in selective breeding?


  They are bred together to produce the next generation
• What is the main problem associated with selective breeding?

  Inbreeding can occur, leading to health issues
• What can inbreeding cause in selectively bred animals or plants?


  It can make them prone to disease or inherited defects
• What are some inherited disorders that can develop in dog breeds due to selective breeding?


  Joint problems, heart disease, or epilepsy
• What should students remember about selective breeding for their exams?


  • Definition of selective breeding (artificial selection)
  • Impact on food plants and domesticated animals
  • Disadvantages, including inbreeding and health issues