Some flowering plants are pollinated by honeybees. At some time in the past, honeybees evolved the ability to see ultraviolet radiation. Some flowers have evolved to produce ultraviolet markers on their petals that direct honeybees to the reproductive parts of the flower. What is this an example of?

This is coevolution: two interacting species evolve adaptations in response to one another. Honeybees’ ability to see ultraviolet light and flowers’ ultraviolet markers that guide bees to reproductive parts are matching traits. Mutualism describes a relationship in which both species benefit, but the question emphasizes their linked evolutionary changes.

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