4 Principles of natural selection

4 Principles of natural selection

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Storyboard Text

  • Genetic Variation 
  • Overproduction and the struggle for existence 
  • Differential survival and reproduction 
  • There are two different colored field mice, one is brown and the other is tan.
  • Change in gene pool
  • The birds eat the brown field mice 
  • The tan field mice survives because they can camouflage with the wheat plants and the brown mice cant. 
  • Now there is only tan mice because the birds ate all the brown field mice. Since there is no more brown mice the tan mice reproduces and the baby comes out with tan fur.
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