Are the Two Types of Peppered Moths the Same Species? Explained
Discover why the light and dark peppered moths are the same species and how their color variation illustrates natural selection.
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Yes, the two types of peppered moths, typica and carbonaria, are indeed the same species, Biston betularia. The difference in their coloring, light and dark respectively, is due to a genetic mutation. This variation has been a classic example of natural selection, as the frequency of the dark form increased in industrial areas where they were better camouflaged from predators on sooty trees. Despite these color differences, they can interbreed and produce viable offspring, which is a key criterion for defining a single species.
FAQs & Answers
- What makes typica and carbonaria the same species? Typica and carbonaria are considered the same species, Biston betularia, because they can interbreed and produce viable offspring, despite their color differences caused by genetic mutations.
- Why do peppered moths have different color forms? Peppered moths have light (typica) and dark (carbonaria) color forms due to a genetic mutation, which became an example of natural selection based on camouflage in polluted versus unpolluted environments.
- How is the peppered moth an example of natural selection? The frequency of the dark form of the peppered moth increased in industrial areas where soot darkened trees, helping them avoid predators, illustrating natural selection in action.