Selective breeding

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  Selective breeding- choosing the healthier and most beneficial ones.

  
• What is selective breeding?

  Breeding the best plants or animals together
• Why do humans use selective breeding?

  To get better offspring with desired traits
• How long have humans been using selective breeding?

  Thousands of years
• What is agriculture?

  A fancy term for farming
• For what traits do we selectively breed cows?

  For meat and milk production
• What types of pets do we selectively breed for?

  Friendly cats and dogs
• What is the first step in selective breeding?

  Select individuals with desired characteristics
• How does selective breeding improve plants over generations?

  By repeatedly selecting the best individuals
• What does the picture of sweet corn illustrate?

  The change from wild to modern varieties
• What is a drawback of selective breeding?

  It reduces the gene pool of the population
• What is a gene pool?

  The collection of alleles in a population
• What happens to the gene pool during selective breeding?

  It becomes smaller over time
• What can inbreeding lead to in offspring?

  Increased susceptibility to diseases
• Why are certain dog breeds prone to health conditions?

  Due to a small gene pool from inbreeding
• What is a risk of having a small gene pool?

  Less variation within the population
• What could happen if a new pathogen infects a selectively bred crop?

  The entire crop could be lost
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