Lesson Objective

Describe the conditions that lead to allopatric and sympatric speciation.

Classify reproductive isolating mechanisms as either pre-zygotic or post-zygotic barriers.

At what point do two populations diverge enough to be considered separate species?

What biological barriers prevent different species from successfully interbreeding?

7.8- Continuing Evolution
7.9-Speciation
7.10-Variation in Populations

Describe the biological species concept and the mechanisms that drive speciation.

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Unit 7 Test