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1. Which of the following is an example of an extrinsic isolating barrier?→Mechanical incompatibility
2. Which of the following is an example of a potential prezygotic isolating barrier?→A river
3. Which of the following would contribute to anagenesis?→Hybrid infertility
4. Which of the following would likely contribute to cladogenesis?→Random mating
5. Which of the following does NOT present a problem for defining species under the BSC?→Asexual reproduction
6. Which of these factors would be most useful for distinguishing species by the Ecological Species concept?→Food choice
7. Assortative mating is an example of→Prezygotic isolation
8. Secondary contact occurs with species that were formerly→Allopatric
9. Reinforcement is a theory of→Geographic isolation
10. When a colonizing population of organisms finds a new habitat and rapidly diverges to occupy all niches, it is an example of→Adaptive radiation
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