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How does the environment contribute to organismal diversity?

Topic

Comparative Development and Evolution

Framing Question

How does the environment contribute to organismal diversity?

Learning Objectives

  • Explain the “organizational-activation” theory of steroid hormone action on development. Use two specific examples that lead to “masculinization” or “feminization” of structures in an organism.
  • Predict how factors such as temperature could be operative in phenotypic diversity within species (e.g. Turtle).

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