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Mating Walnut Flies: followup to the mating scenarios

Now that you have viewed all four scenarios, you should have filled out your data table with information on the number of females mated, number of eggs fertilized, and fertilization rates for all four scenarios.

On the next page, you will be asked questions about your data. But first, this message:

What's wrong with this picture?

Models and animations always present an oversimplification of biological reality. The scenarios you have viewed contain a particularly glaring example. See if you can pinpoint the most egregious error. A hint is available. Or you can jump right to the answer.