Objective: SWBAT use observations of body structures to make inferences about common ancestors.
Do Now:
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Question 1
1.
Using careful observation, Describe at least two differences between these two limbs. Start with the hand bones.
Exit Ticket Review:
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Question 2
2.
Guided Model:
Yesterday's Exit Ticket:
Identify the descendants in the evoluntionary tree from yesterday's exit ticket.
Guided Notes:
Part 1: Observing Species’ Front Limbs Record your careful observations of the zoomed-in illustrations of front limbs for the dire wolf, the fruit bat, and Titanotylopus
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Question 3
3.
Record your observations about the front limb of the dire wolf.
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Question 4
4.
What environment do you think would make the front limb of the dire wolf an adaptive trait.
Practice:
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Question 5
5.
Record your observations about the front limb of the fruit bat.
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Question 6
6.
What environment do you think would make the front limb of the fruit bat an adaptive trait.
Exit Ticket:
Use the text descriptions as well as the images in the Structures Tab to answer the questions below.
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Question 7
7.
What differences do you see between the animals above?
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Question 8
8.
Why do you think this bone structure was different for each of the species? Make a hypothesis about the environments of the two species as supporting evidence.
CFS:
student describes the relationship between anatomical similarities and differences in animal species
student describes the environmental difference between animal species with a common ancestor based on body structures
