In one butterfly species, the colors of individuals range from white to black, with many shades of gray in between. If the butterflies in a mountain population become more and more similar in color over several generations (e.g., if most butterflies are the same shade of gray), what kind of evolutionary force is likely acting on the population?

Question

Quizplus · Accepted Answer

Stabilizing selection is likely acting on the population because it favors the intermediate shades of gray, reducing variation and making the population more similar in color.

In One Butterfly Species, the Colors of Individuals Range from White