Natural Selection Webquest s1

Natural Selection Webquest Name______TRACKSTAR #419715 Date ______Period ______

Go to each of these websites. Once there, read the material to discover information about Natural Selection. Site 1: http://www.biology-online.org/2/10_natural_selection.htm

1. Who was Charles Darwin? What is he known for?

2. What does the phrase "survival of the fittest" mean?

Site 2: http://www.biology-online.org/2/11_natural_selection.htm

3. Which part of the finch has changed over time?

4. For each of these diagrams, write what type of food the beak shape is best suited for.

a. ______b. ______c. ______d. ______

5. Explain how industrial melanism has affected moths.

Site 3: http://www.experiment-resources.com/darwins-finches.html Read the first two sections "Darwin's Finches" and "The Galapagos Islands" 8. Did Darwin first believe that each finch he found was a different species? Was he right or wrong?

9. How did organisms arrive at the Galapagos Islands?

Site 4: http://www.biology-online.org/2/12_selective_breeding.htm 6. Why is selective breeding useful to farmers?

7. What does it mean to selectively breed an organism?

Site 5: http://www.alleghany.k12.va.us/animal%20adaptation%20webpage/animal_mimicry.htm 10. What is mimicry? How does mimicry benefit an organism? Site 6: http://ngm.nationalgeographic.com/2009/08/mimicry/mimicry-interactive Look at the images in the slideshow. Click on the organisms that are hiding in plain sight. 11. Give three examples of mimicry.

Site 7: http://faculty.clintoncc.suny.edu/faculty/Michael.Gregory/files/bio%20101/Bio %20101%20Lectures/Natural%20Selection/natural.htm Read the first 3 sections (stop when you get to variation). 12. Does natural selection act on individuals or does it act on something else? Explain this.

13. What are the 4 reasons that natural selection occurs?

1. ______

2. ______

3. ______

4. ______

Site 8: http://www.pbs.org/wgbh/evolution/library/01/5/l_015_02.html 14. Why are there so many breeds of dogs?

15. All dogs are of a single species, regardless of what they look like. They are all descended from what animal? Give the scientific and common names.

Scientific ______Common ______

Site 9: Natural Selection Game: Read the directions for the interactive website before playing. http://www.sciencechannel.com/games-and-interactives/charles-darwin-game.htm

How long did you survive? What caused your species to become extinct?

Site 10: “Survival of the Sneakiest” http://evolution.berkeley.edu/evolibrary/article/0_0_0/sneakermales_01

Read the comic and answer the four questions below.

1. When it comes to crickets, what does fitness mean?

2. Is calling good or bad for a cricket's fitness?

3. Give some examples of selection at work in this cricket story.

4. How does selection favor calling? How does selection favor not calling?