Some Drosophila Melanogaster Larvae Use a "Sitting" Foraging Strategy in Which

Multiple Choice

Some Drosophila melanogaster larvae use a "sitting" foraging strategy in which they feed more or less in the same location, while "rovers" wander around the substrate looking for more food sources. In the graph below, the dotted line corresponds to sitters and the solid line corresponds to rovers. This is an example of _______; over time we expect ________.

A) negative frequency-dependent selection; both strategies to persist in the population
B) pleiotropy; both strategies to persist in the population
C) frequency-dependent selection; the rover strategy to replace the sitter strategy because it has the highest fitness
D) pleiotropy; the rover strategy to replace the sitter strategy because it has the highest fitness