Courtship for Anolis Lizards Involves the Male Displaying a Dewlap

question 42

Multiple Choice

Courtship for Anolis lizards involves the male displaying a dewlap (skin under the throat area) that varies in appearance based upon the species.Lizards that are found in darker,more shaded environments will have dewlaps that are lighter in color because they are more noticeable by potential mates.Which of the following mechanisms best explains how speciation is at work in this example?

• A)Postzygotic isolation
• B)Reinforcement
• C)Genetic drift
• D)Natural selection

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