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  • Genetic Variation 
  • Dark colored seal 
  • Overproduction & Struggle for Survival 
  • Differential Survival and Reproduction 
  • Population of seals that have two different types of color. 1.Dark colored Seals 2. Light colored Seals 
  • Change in the Gene Pool 
  • Seals have one pup a year and wait about a month on land until they have their waterproof fur. This can lead to starvation. 
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  • The light colored seals struggled to survive because they were more noticeable than the dark colored seals. The dark colored seals are less likely to be seen and continue to reproduce and pass on their trait onto future generations.
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  • There are a high frequency of dark colored seals and a low frequency of light colored seals. Natural selection allows the organisms with beneficial traits to continue to survive and reproduce in their environment. 
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