Phenomenon: The fur color of the mouse population changed over time, with dark-colored mice becoming more common., Evidence: For example, dark mice increased from 18 individuals in generation 0 to 79 individuals by generation 5, while light mice decreased from 82 to 21., Explanation: This occurs because dark fur provides better camouflage on dark volcanic rock, making those mice less visible to predators., Result: Dark mice were more likely to survive and reproduce. Therefore, mice with dark fur passed this trait to their offspring more frequently, causing dark fur to become more common in the population over generations.,

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