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weektwostudy - Biol 201B Spring 2007(Berta Week 2 Study...

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Biol 201B Spring, 2007 (Berta) Week 2 Study Questions 1. Define and give an example of the term exaptation. 2. Provide a cladogram showing the traditional vs. current concept of relationship among birds and reptiles. 3. Are scales and feathers homologous structures? Why or why not? 4. Compare blood-circulation in representative vertebrates: amphibian, fish and archosaurs. 5. Name and list the function of each of the membranes of the amniotic egg and discuss its significance to amniotes. 6. The worldwide decline in amphibians (especially fogs) has been attributed in part to a fungus. How might this cause frog deaths? 7. Why might tuataras deserve a higher conservation priority than snakes? 8. Give a vertebrate example of a non-monophyletic group. What’s wrong with recognizing non-monophyletic groups? 9. Review three problems and solutions vertebrates encountered in moving from the water to the land. What hypotheses have been proposed to explain why vertebrates moved onto the land? 10. Provide an example of how heterochrony can cause the evolution of
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