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I'm Looking Over a White-Striped Clover
A Natural Selection Case
This case is an exploration of the process of natural selection using white clover (Trifolium repens) as an example. In general, two forms of white clover can be found around the world in various habitats. One type is able to produce cyanide in its leaves, while the other is not. This variation within the clover species, along with the fact that cyanide production is paired with the production of a white stripe on the leaf, is used to teach the process of evolution through natural selection. Students use the scientific method to explore these concepts. As an introduction to evolutionary concepts in biology, the case would be appropriate for both high school and college biology courses.
|Keywords:||Natural selection; variation; adaptation; evolution; white clover; trifolium repens; cyanide; cyanogenesis; experimental design|
|Topical Area:||Scientific method|
|Educational Level:||High school, Undergraduate lower division|
|Subject Headings:||Biology (General) Evolutionary Biology Botany / Plant Science|
|Copyright:||Copyright held by the National Center for Case Study Teaching in Science, University at Buffalo, State University of New York. Please see our usage guidelines, which outline our policy concerning permissible reproduction of this work.|
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