Natural Selection Storyboard

Natural Selection Storyboard

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Storyboard Text

  • Unit:  Evolution
  • Focus Question: How does natural selection lead to adaptations in populations?
  • Adaptation
  • Organism: Polar Bears Environment: Tundra Adaptation: Body Fat Adaptation Type: Physical
  • Principle 1: Genetic Variation
  • Natural selection leads to adaptations in population as the survivors reproduce and pass on their strong genes. 
  • Principle 2: Overproduction and the struggle to Survive 
  • This adaptation increases the organisms fitness helping them survive by helping them keep warm from the harsh weather in their environment. Being able to survive means also being able to reproduce. 
  • Principle 3: Survival and reproduction of the Fittest
  • The genetic variation within the polar bears is bears with more body fat 
  • Principle 4: Changes in the Gene Pool
  • Bears with less body fat will have a less chance of survival. Since body fat contributes to warmth, those without warmth will become weaker as it'll be difficult to hunt for food. 
  • Bears with more body fat than other bears will survive and reproduce their offspring.
  • Genes for more body fat will be passed down to the next generations of polar bears. As generations pass on genes will be become stronger and stronger.
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