Bio 11 Natural Selction

Bio 11 Natural Selction
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  • There are two variations of egret in this population, light and dark, and they have the same diet, which is solely fish
  • Natural Selection of the little egret By Mattias Kehler
  • When the dark trait is first introduced, there are many more light individuals than dark individuals
  • The darker egrets are harder for the fish to see underwater, so they have a strong advantage when eating
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  • Now, a few generations later, there are the same amount of dark individuals as there are light individuals
  • Because they have an advantage, more dark egrets survive and reproduce
  • Because they had difficulty catching fish, most of the light individuals from this generation died
  • Now, after a few more generations, the population has evolved to be only dark egrets because of their superior trait
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