Thursday, January 21, 2010

Patterns of Selection


As I mentioned in the natural selection expected learning outcomes, I want you to understand the three patters on selection- directional selection, stabilizing selection, and disruptive selection. In addition, to the readings in your textbook, you will find useful info on this topic in the Encyclopedia of the Earth article on Evolution http://www.eoearth.org/article/Evolution.

Expected Learning Outcomes

By the end of this course, the fully engaged student should be able to

- distinguish between directional, stabilizing, and disruptive selection
- describes how directional. stabilizing, and disruptive selection work
- give examples of traits produced by each of these patterns of selection
- draw the graph that shows the relationship between fitness and trait size that produces each of these patterns of selection.

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