Natural Selection

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  • Principle #1- Genetic Variation Variation exists in the rabbit species. Some rabbits have dark or light fur. 
  • Principle #2-  Overproduction and the Struggle for Existence Rabbits will always reproduce than the environment can support. Some rabbits will die. 
  • Principle #3- Differential Survival and Reproduction The light fur rabbits are easier for wolfs to see in the forest. The dark fur rabbits camouflage well with its surrounding. 
  • Principle #3- Differential Survival and Reproduction Since the dark fur rabbits camouflage with its environment, they survive long enough to reproduce. 
  • Principle #4- Change in Gene Pool Since dark fur rabbits have higher fitness, over time the frequency for the dark fur allele will increase in the gene pool.
  • That is Natural Selection. 
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