Voyage of the Beagle

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Voyage of the Beagle

• Darwins Reasoning for Natural Selection

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First Station

• You will see 3 examples of living organisms.
  Write what you observe on each slide in the space
  provided on your handout, then write what pattern
  you observe and why you think you see this
  pattern

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First Station SLIDE 1

• This is a sunflower with a close-up of the seeds
  on one flower. Approximately, how many seeds do
  you see on the one flower?

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First Station SLIDE 2

• Drosophila melanogaster are fruit flies. Each
  female can lay 400 eggs, which hatch after 12
  hours.

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First Station SLIDE 3

• Bacteria, like E. coli, can reproduce by binary
  fission at a fast rate.
• CLICK THE LINK! Watch the movie! (you might need
  to exit the slideshow and click on the internet
  window)

http//www.microbeworld.org/images/didyouknow/ecol
i.mov
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Second Station

• Were watching you. Stop goofing off! )

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Second Station

• Here is a litter of kittens what variability
  exists?

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Second Station

• Their father Their mother

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Second Station

• These zebra finches are siblings.

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Second Station

• The father The mother

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Third Station

• Here, a herd of zebras is running. Describe how
  they look as a group. (Hint notice the effect of
  the stripes when the zebras are so close
  together)

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Third Station

• When the lion hunts the zebra, she isolates one
  to chase. She has trouble singling out one zebra
  from a running herd, due to the stripes.

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Third Station

• Special zebra mutations

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Third Station
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Third Station
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Fourth Station Flipbook

• This is a type of insect called a grub.
  Individuals of this species come in two sizes,
  big and small. Each individual can make 2 babies
  each breeding cycle. Watch what happens to them
  in two different environments.

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Fourth Station FIRST SCENARIO
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Fourth Station FIRST SCENARIO
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Fourth Station FIRST SCENARIO
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Fourth Station FIRST SCENARIO
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Fourth Station FIRST SCENARIO
Do you see the trend that has formed? What will
happen to this population of grubs?
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Fourth Station SECOND SCENARIO
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Fourth Station SECOND SCENARIO
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Fourth Station SECOND SCENARIO
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Fourth Station SECOND SCENARIO
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Fourth Station SECOND SCENARIO
Do you see the trend that has formed? What will
happen to this population of grubs?
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Natural Selection in Action

• Interactive Natural Selection Demonstration
• http//science.discovery.com/interactives/literacy
  /darwin/darwin.html
• Read the information, play the game (can you
  survive, or will you go extinct?), then try to
  pass the quiz try to get them all right!