A trait, feature, or structure that serves a purpose but was not evolved by natural selection for its intended function is referred to as:

The most famous proverb is "great minds think alike." In terms of evolutionary views, which of the following scientists best matches this description?

AIDS is caused by the human immunodeficiency virus (HIV). Over time, HIV has evolved a resistance to antiviral drugs. This is the best illustration of the:

The forelimbs of frogs, birds, rabbits, and lizards look very different, but they share a common ancestor and are made up of common bones. These traits are ______.