Download Homologous and Analogous Webquest

Name:
Homologous and Analogous Webquest
Directions: Read each page entirely and answer questions before moving on. You may always push the back button if
you’ve moved ahead too far.
Section #1: http://evolution.berkeley.edu/evolibrary/article/similarity_hs_01
1. Why do 2 sisters look alike?
2. Why do Elvis Impersonators look alike?
3. Define Homology: traits _____________ from common ____________________________.
4.
Define Analogy: similar traits due to ________________ challenges
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5. Click on a limb
a. Why did you click on the first one? (What was different about it?)
b. Why did you click on the second one?
c. Why did you click on the third one?
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6. What type of organisms do the limbs belong to?
a. How are the limbs similar?
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7.
What does an evolutionary tree show?
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8. What are a few examples of homologies?
a.
b.
c.
Section #2: http://evolution.berkeley.edu/evolibrary/article/0_0_0/similarity_hs_07
9. What are analogies?
10. Why are saber teeth analogies?
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11. What causes analogies to occur?
12. Press start and watch the flowers change due to the hummingbird. Summarize what happened.
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13. Sharks vs Dolphin: Homology or Analogy? Why?(Submit answer before moving on.)
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14. What is similar about the basic structure of mice and crocodiles?
15. What is similar about the relationship to other features?
16. What is similar about the development?
Section #3: http://evolution.berkeley.edu/evolibrary/article/0_0_0/similarity_hs_12
17. Flying Squirrel vs. Sugar Glider: Homology or Analogy? Why?
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Section #4: http://evolution.berkeley.edu/evolibrary/article/side_0_0/homology_01
18. Describe variations of the 4 plants leaves. What functions do they serve?
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19. What three bones are shared by frog, rabbit, bird and lizard?
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20. Describe the homologous behavior between different species of bowerbirds.
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21. Describe the Pax-6 gene.
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22. What part of a plant do you eat in cauliflower and broccoli?
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23. Which mammalian and lizard bones developed from the same structure?
Section #5: http://evolution.berkeley.edu/evolibrary/article/side_0_0/analogy_01
24. Did barnacles and limpets inherit their shells from their common ancestor? ________________
25. Why did the two organisms evolve with the shells?
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26. Are the two plants close relatives of one another? ________________________
27. Why did they develop similar adaptations? _______________________________________________________
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28. Are the similarities between the anteater and the echidnas homologous or analogous? ___________________
29. Why? _____________________________________________________________________________________
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30. Is the panda's "thumb" homologous or analogous to the thumb on your own hand? _________________
31. Why? ______________________________________________________________________________
Great job! Turn into your class box!