Practice 2 Answer the following questions on the distribution of traits caused by natural selection. Darken the circle
that corresponds to your answer choice.
1. In a tropical habitat, a variety of hummingbird species use their bills to feed on flower nectar. If a population of
hummingbirds enters a new habitat with an abundance of trumpet vine plants that have longer flowers, those
individuals with slightly longer bills will be favored in the new environment. Those hummingbirds with
medium-length and shorter bills are less successful. Which type of natural selection is at work in this example?
stabilizing selection ® disruptive selection © directional selection O bilateral selection