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2. Evolution http://life.uiuc.edu/animalbiology/105/ ID: eee105 Password: prAIRie Lec 13 13Feb02

3. Natural selection N 0100 a characteristic selection

4. Antibiotic resistance in disease bacteria

5. Insecticide resistance disease vectors

7. Insecticide resistance disease vectors agricultural pests

8. Pests evolve pesticide resistance r-strategists evolve most rapidly

9. Genetic variation is “raw material”

10. Environment “edits” the population

11. Genetic variation is “raw material” Environment “edits” the population

12. Genetic variation is “raw material” Environment “edits” the population

13. Genetic variation is “raw material” Environment “edits” the population

14. Genetic variation is “raw material” Environment “edits” the population

15. Genetic variation is “raw material” Environment “edits” the population

16. Genetic variation is “raw material” Environment “edits” the population

17. natural selection continuous competition

18. Natural selection continuous competition between membersof the same species between members of the same species

19. Natural selection continuous competition between members of the same species

20. Natural selection N 0100 a characteristic selection Selection forces ?

21. Selection forces Natural selection Physical environmental factors e.g weather Density-independent limiting factors Physical environmental factors e.g weather

22. Selection forces Natural selection Physical environmental factors Density-independent limiting factors Density-dependent limiting factors disease predation

23. Food chain E producer primary secondary consumer autotrophherbivorepredator respiration decomposition parasites each trophic level regulates population of its prey each trophic level selects its prey

24. Selection forces Natural selection Physical environmental factors Density-independent limiting factors Density-dependent limiting factors disease predation competition between species

25. Competition between species

26. pests vs. us pests vs. us Competition between species

27. weeds vs. us weeds vs. us pests vs. us pests vs. us

28. Selection forces Natural selection Physical environmental factors Density-independent limiting factors Density-dependent limiting factors disease predation competition between species

29. The ecological theater The evolutionary drama An ecosystem

30. But, how can “random” processes design complex structures?

31. But, how can “random” processes design complex structures? Isn’t this like expecting a bunch of monkeys locked in a room with typewriters to eventually type out Hamlet’s soliloquy? Actually one monkey with a computer could do it -- if it were arranged like natural selection

32. monkey, typing computer

34. q Don’t Save

36. m

38. t Save

39. t

40. tk Don’t Save

41. t

42. to Save

43. to

44. toq Don’t Save

45. that is the question tobe or not to be

46. that is the question tobe or not to be

47. Evolution by Natural Selection is not random Selection is non-randomnon-random