Adaptations, Natural Selection, and Selective Breeding

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Adaptations, Natural Selection, and Selective Breeding

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  1. Adaptations, Natural Selection, and Selective Breeding

    Slide 1 - Adaptations, Natural Selection, and Selective Breeding

  2. What the heck are traits?

    Slide 2 - What the heck are traits?

    • Learned
    • Inherited
    • Have to learn
    • Ex: include walking, flying, what you like to eat
    • Born having it -can be physical or behavioral.
    • Ex: Eye color, Fur color, shape of nose, instincts
  3. Variations, mutations, and adaptations

    Slide 3 - Variations, mutations, and adaptations

    • Variations- Differences in a trait, not all the same
    • Mutation- Radom change in the DNA, Kind of like an “error”
  4. Behavioral Adaptations

    Slide 4 - Behavioral Adaptations

    • Something an organism DOES to survive
    • Examples: Schooling fish, living as a pack or herd, migration
  5. Physical/Structural Adaptations

    Slide 5 - Physical/Structural Adaptations

    • A physical feature of the organism, something that is built into the structure.
    • Examples: Beaks on birds, leaves of a plant, claws on a bear, ears on a rabbit
  6. Internal Adaptations

    Slide 6 - Internal Adaptations

    • Internal adaptations are adaptations that are inside of the organism, can’t be seen visually
    • Examples: hollow bones in birds, gills, and xylem in plants
  7. Natural Selection

    Slide 7 - Natural Selection

    • Organisms that are best adapted to survive live and reproduce.
    • Survival of the best adapted (fittest)
    • Which of the following organism would benefit from natural selection in the given environment?
  8. Selective breeding

    Slide 8 - Selective breeding

    • Humans selecting two organisms to reproduce to get a desired trait