A researcher tested the hypothesis that hoverflies prefer to feed on white-colored flowers. She presented flies with an equal number of red, blue, and white flowers and recorded their visitation behavior. She found that bees did not exhibit a preference for any color. This is an example of:

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The researcher expected hoverflies to prefer white flowers, but the results showed no preference, which is considered a negative result as it does not support the initial hypothesis.

A Researcher Tested the Hypothesis That Hoverflies Prefer to Feed