Blue Sky Science: How do people get different colored eyes?

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Blue Sky Science is a collaboration of the Wisconsin State Journal and the Morgridge Institute for Research. The questions are posed by visitors to Saturday Science events at the Discovery Building, a monthly series that features interactive exploration stations centered around a particular topic. The Blue Sky Science team then sets out to find an expert to answer the questions.

This month, Terri Young, MD, MBA, chair of the Department of Ophthalmology and Visual Sciences, answers a Blue Sky Science question: Why do some people have different colored eyes?