Practice problem
Charles Darwin — Role in the Theory of Natural Selection

Image source: By Kenneth Dwain Harrelson CC BY 2.0, via Wikimedia Commons
Image source: By USFWS Mountain-Prairie CC BY SA-2.0, via flikr.com
Most predators avoid eating monarch butterflies because the butterflies contain toxins due to their diet. Another type of butterfly, called viceroy, is also avoided by predators because they have similar wing coloration to the monarch, even though they are not poisonous. What would you call the Viceroy's appearance?