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Unformatted text preview: barrier. 10. Define sympatric speciation and explain how polyploidy can cause reproductive isolation. 11. Distinguish between autopolyploid and allopolyploid speciation . Describe examples of each. 12. Explain how habitat differentiation has led to sympatric speciation in North American maggot flies. 13. Explain how sexual selection has led to sympatric adaptive radiation in the cichlids of Lake Victoria. Explain how the process of speciation may be reversing, due to pollution in this lake. Hybrid Zones 14. Define the term hybrid zone . Describe the three outcomes for hybrid zones over time. 15. Describe examples that illustrate rapid and gradual speciation events . 16. Explain how a small number of genetic changes may lead to speciation in plants and animals....
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- Spring '08