You are a biologist studying a natural population of mice, and you observe that in one area the proportion of darker colored mice is greater than the proportion of lighter colored mice. In another area, the opposite is true. You find that only the area with more dark mice has predators. Therefore, you hypothesize that darker mice are favored in areas with predators, perhaps because they are more difficult to see. If your hypothesis is true, what would you expect to happen in the few generations after predators are introduced to an area with a population of mice that previously did not have predators?

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    The proportion of darker colored mice will increase.
    The proportion of darker colored mice will not change.
    The predators will evolve to be able to better see the darker mice.
    The proportion of darker colored mice will decrease.

asked May 30, 2013 in Biology by anonymous
    

1 Answer

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The proportion of darker colored mice will increase.
answered May 31, 2013 by Bioshare ~Top Expert~ (34,070 points)

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