Use this formative to review what you've learned!

  1. What is the purpose of the sensory organ on the noctuid moth’s thorax?

  2. What changes will occur if a population of noctuid moths is in an environment free of bats? What are the probable mechanisms are at work?

  3. Why does natural selection in this situation favor the moths without sensory organs?

  4. What would happen if this situation occurred in an alternate universe in which genetic drift did not occur?

  5. Does genetic drift encourage genetic variation? Does gene flow from only one population to another encourage genetic variation? Does gene flow between two populations encourage it?

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