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Chapter 25: Origin of Species and Macroevolution

Page history last edited by Derek Weber 11 years, 2 months ago

Learning Objectives
Chapter Materials

25.1 Identification of Species

• Distinguish between the biological species concept and the ecological species concept.

• Define the two kinds of reproductive isolating mechanisms.

• Describe the relationship of reproductive isolating mechanisms to the biological species concept.

• Define reinforcement in the context of reproductive isolation.

• Explain how speciation might occur when populations are in direct contact with one another.

25.2 Mechanisms of Speciation

• Define reinforcement in the context of reproductive isolation.

• Explain the possible outcomes when two populations that are partially reproductively isolated become sympatric.

• Compare and contrast sympatric and allopatric speciation.

• Explain the conditions required for sympatric speciation to occur.

25.3 The Pace of Speciation

• Differentiate between the two major concepts regarding the pace of speciation.

• Explain the components of the punctuated equilibrium hypothesis.

25.4 Evo-Devo: Evolutionary Developmental Biology

• Address several examples of how understanding the development of an organism has helped evolutionary biologists understand ancestral relationships.

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