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Describe the process of allopatric speciation and provide an example of how it might occur in nature.
Explain how sympatric speciation can occur in a population and provide an example.
How can reproductive isolation contribute to the formation of new species?
Discuss the role of natural selection in the process of speciation.
How can polyploidy lead to speciation, particularly in plants?
Describe how temporal isolation acts as a prezygotic barrier and provide an example.
Explain how hybrid sterility acts as a postzygotic barrier and provide an example.
How does behavioral isolation contribute to the formation of new species? Provide an example.
Describe how mechanical isolation acts as a prezygotic barrier and provide an example.
Explain how reduced hybrid viability acts as a postzygotic barrier and provide an example.
Describe how geographic isolation contributed to the speciation of Darwin's finches on the Galápagos Islands.
Explain how sexual selection might have contributed to the speciation of cichlid fish in African lakes.
Discuss the role of ecological niches in the speciation of Darwin's finches.
How did adaptive radiation contribute to the diversity of cichlid fish in African lakes?
Explain how hybrid zones can provide insight into the process of speciation using cichlid fish as an example.
How does behavioral isolation contribute to the formation of new species? Provide an example.
(Student response here)
Behavioral isolation is a prezygotic barrier where differences in mating behaviors or rituals prevent interbreeding between species. For example, different species of birds may have unique songs or dances that attract only their own species, preventing them from mating with other species.
Which of the following is an example of behavioral isolation?
Two species of insects that cannot mate due to incompatible reproductive organs.
Two species of crickets that have different mating calls.
Two species of fish that live in different parts of a river.
Two species of plants that release pollen at different times.