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Uploaded on Sep 1, 2009
Principles of Evolution, Ecology and Behavior (EEB 122)
Reaction norms depict the range of phenotypes a single genotype can produce, depending on the environment. Reaction norms must fit within an organism's phylogenetic constraints. They can differ for different individuals within a population, but some traits differ very little based on the environment; some do not differ at all.
00:00 - Chapter 1. Introduction 03:22 - Chapter 2. Reaction Norms 12:10 - Chapter 3. Reaction Norms in Populations 23:42 - Chapter 4. Developmental Constraints on Reaction Norms 36:23 - Chapter 5. Benefits and Limitations of Studying Reaction Norms