Question

A) Vampire bats can drink large meals of blood; upon returning to their densely populated roosts, they may sometimes share with others by regurgitation. Use this example to explain the meaning of the famous expression rB > C, and make a prediction about when the sharing behavior occurs.

B) Using the example of frogs with female preferences for male call length, concisely describe an experimental treatment and the resulting expectation in phenotypic change that would indicate a correlated response to selection. Sketch a graph to show the expected results.