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Name____________________________ AP Biology Research Update: Testing Natural Selection H. Allen Orr Scientific American, January, 2009, Vol. 300 Number 1 1. Why was Darwinism revolutionary? 2. What are the three goals of the recent experimental work in natural selection? 3. What is the best way to appreciate (witness) evolution by natural selection? 4. Based on the article, what do you think “fitness” means? 5. Where do genetic types originate? 6. Why are most mutations bad? 7. Describe the two steps of adaptive evolution. 8. “...the proportion of broad-ranging species should increase with time” Why does this make sense and why is it, in most cases, actually untrue? 9. Describe the view of Motoo Kimura. 10. What two developments have shown Kimuras’ neutral theory of evolution underestimates the importance of natural selection? 11. Evolution in Action. Why did the bill of the Scarlet honeycreeper become shorter? Why did the European rabbit change in body size, weight and ear shape? 12. Why is answering the genetic questions of natural selection so difficult? How have scientists overcome this obstacle? 13. What is advantageous about using bacteriophages? 14. What is the significance of the monkeyflower experiment? (Make sure to describe YUP) 15. Define the term “species”. 16. What do contemporary biologists reduce the question of whether natural selection drives the origin of species to? 17. What did many evolutionists of the 20th century believe led to speciation? 18. Besides the monkeyflower experiment what other experiment showed that genetic drift was not the driving force in speciation?