Name: _____________________________ Period: _____ Date: __________________________
Ch 17: Patterns of Evolution
Internet Scavenger Hunt
Types of natural selection
 http://evolution.about.com/od/NaturalSelection/tp/Types-Of-NaturalSelection.htm
 http://www.sparknotes.com/biology/evolution/naturalselection/section1.rhtm
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1. What is artificial selection?
Click on the words artificial selection in the article (not title) to find an example in
plants and animals and describe below:
2. An example in plants is…
3. an example in animals is…
3 Types of Natural selection:
4. Directional selection. Explain and give an example (be sure to click on “more”.)
5. Disruptive selection. Explain and give an example (be sure to click on “more”.)
6. Stabilizing selection. Explain and give an example (be sure to click on “more”.)
7. What does the bell curve look like for a normal population and what does it show
about phenotypes?
8. – 11. Identify/explain these bell curves as normal population or one of the types of
natural selection.
Watch the video and answer the questions:
http://wps.pearsoncustom.com/wps/media/objects/3014/3087289/Web_Tutorials/
17_A02.swf
Genetic Drift
 http://evolution.berkeley.edu/evosite/evo101/IIIDGeneticdrift.shtml be sure
to click on the Explore Further links at the bottom.
12. Define genetic drift.
13. What 3 effects does it have on evolution?
14. What is a bottleneck effect? Give an example.
15. What is a founder effect? What 2 consequences are there for small populations?
watch the animation:
http://highered.mheducation.com/sites/dl/free/0072835125/126997/animation45.
html
Genetic equilibrium
 http://www.brooklyn.cuny.edu/bc/ahp/LAD/C21/C21_Equilibrium.html
16. When a population in is genetic equilibrium,
what should be seen?
17. What things stay constant according to the
Hardy-Weinberg principle?
These are peccaries, btw…
5 things must happen for a population to remain in genetic equilibrium and not
Evolve. Name/explain each:
18.
19.
20.
21.
22.
Click through this one to see some pictures of these 5 things;
http://www.phschool.com/science/biology_place/labbench/lab8/concepts.html
Speciation
 http://evolution.berkeley.edu/evosite/evo101/VSpeciation.shtml click through
the presentation
23. What defines a species?
24. What is speciation? How can you see it on a
cladogram (branching diagram to the right?)
25. How is gene flow related to speciation?
Describe and give an example of how speciation occurs due to: (you may have to
“explore further”)
26. geographic isolation
27. reproductive isolation
28. What two patterns of speciation (describe ) do plants have that are unique?
Patterns Of Evolution
 http://www.sparknotes.com/biology/evolution/patternsofevolution/section1.r
html
 http://bioweb.cs.earlham.edu/9-12/evolution/HTML/converge.html
These two sites are going to give you definitions…watch the video (9 min.) to round
out your knowledge and fill in whatever is missing.
 https://www.youtube.com/watch?v=Gt3S9zWtGEA
Define and give an example of:
29. Divergent evolution
30. Convergent evolution
31. Coevolution
32. Adaptive radiation
33. Define gradualism and punctuated equilibrium.
34. Identify each of those two (from 33.) in the picture below.
classroom activity?
Link for plans:
http://evolution.berkeley.edu/evolibrary/search/search_lessons.php?audience_level
%5B3%5D=912&topic_id=4&keywords=&type_id=&sort_by=resource_title&Submit=Search
http://www.ucmp.berkeley.edu/education/lessons/anolis/student_lesson.html
good phylo tree click thru
http://evolution.berkeley.edu/evolibrary/article/evo_03