[Campbell Biology P.72] Considering the data from both graphs, which scenario offers a dark... | Practice Question

Considering the data from both graphs, which scenario offers a dark brown mouse the greatest likelihood of escaping predation by owls?

  • A: On light-colored soil during a full moon.
  • B: On dark-colored soil during a full moon.
  • C: On light-colored soil with no moon.
  • D: On dark-colored soil with no moon.

Explanation

To determine the greatest likelihood of escape for a dark brown mouse, we look for the conditions under which the fewest dark brown mice were caught. In Graph B dark-colored soil , both under 'Full moon' and 'No moon,' approximately 12 dark brown mice were caught. This is the lowest number across all conditions for dark brown mice. Therefore, a dark brown mouse on dark-colored soil offers optimal camouflage, leading to the highest chance of escape, with the full moon condition being marginally better due to slightly fewer overall captures compared to the no moon condition for dark coat.