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EH: 1.4 (2/16) Version B

Last updated over 2 years ago
8 questions

Objective: SWBAT make inferences about the relationships between organisms by interpreting evolutionary trees.

Do Now:

0


Above are the bones of two imaginary species. Look at the body structures for both species, then select which body structures these two species share.
[Skull, Backbone, Tail, Front limb, Back limb]

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
"I think that the two speces are related. I think that they are related because ...
Similar structures I see are ... "

Guided Notes:

0

Complete the guides notes below

Practice:


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)

1. Rabbit
2. Elephant

0

Do you think the two species you identified 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

"I think that the species have a common ancestor because ... "

(THINK: What similar stuctures do you know exist between an Elephant and Rabbit)

Exit Ticket:

Use the diagram below to answer the following questions:

1

What are the descendants in this diagram? (list)

(THINK: who are the newest species presented on the table)

1

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

(THINK: who are the oldest species presented on the table)

2

How can you use structural evidence to help support why humans and blue whales are related species?
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

"I think that the two speces are related. I think that they are related because ...
Similar structures I see are ... "

(THINK: Read the information below each species,why do you think the Whale and Human are related?)