EH 1.4 (2/16)

Last updated over 2 years ago
8 questions
0

Do you think the two species from the Do Now have a common ancestor? Explain
CFS:
  • student describes the relationship between anatomical similarities and differences in animal species
  • student describes the chronological difference between animal species with a common ancestor

0

Annotate the following Image

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What are the descendants in this diagram? (list)

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What body structures did the common ancestor have? (list)

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What are the body structures that both descendants share with this common ancestor (list)?

How does this evidence support whether these three species are related?
CFS:
  • student describes the relationship between anatomical similarities and differences in animal species
  • student describes the chronological difference between animal species with a common ancestor

0

Why do paleontologists make diagrams (evolutionary trees) like this? What are they trying to show?
CFS:
  • student describes the benefit of using models and graphics
  • student describes the chronological difference between animal species with a common ancestor


Do:
  • Open the Sim in Free Explore mode and press TREE to open Tree View.
  • Navigate through the evolutionary tree and press each of the “i” icons on the tree branches as you go.
  • Read the text from each icon until you find the “i” icon that has the body structure you are exploring.
  • Follow the tree branches to the right of this icon to find two living species that have this body structure.
  • Try to find species that are very different from one another by expanding branches of the evolutionary tree at the bottom of the screen.
Tips:
  • The “i” icons are the orange and white circles with the letter “i” in the center.
  • Navigate through the evolutionary tree by pressing on rows in the Tree Navigation window or by pressing the arrows in the main window.

0

Name the two species you found that share the body structure. (list)

0

What evidence do you have to support or reject that the two species you identified have a common ancestor?
CFS:
  • student describes the relationship between anatomical similarities and differences in animal species
  • student describes the chronological difference between animal species with a common ancestor