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Interactive video lesson plan for: 8. The Expression of Variation: Reaction Norms

Activity overview:

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

Complete course materials are available at the Open Yale Courses website: http://open.yale.edu/courses

This course was recorded in Spring 2009.

Tagged under: reaction norms,development,variation,Phylogenetics,plasticity,canalization,genotype,phenotype,population,Distalis,butterflies,macroevolution,environment

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