# Describe two traits that some of the objects share

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2.Describe two traits that some of the objects share but other objects do not (sharedderived traits).
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3.Describe one trait that is particularly unusual, perhaps found in only one object (a uniquederived trait).
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You may find it useful to complete a data matrix to help you see patterns in the traits.Remember to indicate what your traits are and add more rows as needed for additional objects.Trait 1:CircularTrait 2:TwoDotsTrait 3:FourDotsTrait 4:Dark BlueTrait 5:Medium BlueTrait 6:Light BlueTrait 7:LargeObject 1YesYesNoNoNoYesNoObject 2YesNoYesYesNoNoYesObject 3YesYesNoNoYesNoNoObject 4YesNoYesNoYesNoNoObject 5YesYesNoYesNoNoYesObject 1:Object 2:Object 3:Object 4:Object 5:Exercise 4Work with a small group or alone to complete this exercise. The second step ofclassification is using homologous traits to determine the relationships between organisms.Based on the traits you identified in Exercise 3, it should now be possible to group some of theobjects together. Objects that share a derived trait are related to each other, and they should begrouped together. Objects that share multiple shared derived traits are really closely related andshould be subgroups within larger, related groups.Draw your groups here:
Exercise 5Work with a small group or alone to complete this exercise. The final step inclassification is to diagram the relationships you have identified. Using the groups you made inExercise 4, identify the nested relationships between the objects. Consider which objects aremost closely related, and what object or objects are the next most closely related. Draw thecladogram of these relationships in the space below. Show which objects possess which traitsby labeling your cladogram with the traits you used (as in Figure 9.8).
Chapter 10Exercise 1Work with a small group or alone to complete this exercise. Use the mystery mammalsprovided by your instructor (or depicted in the lab Appendix) to complete the chart below.Identify whether the mystery mammal is a primate and list one trait that helped you make thisidentification.Primate (Yes or No?)TraitMystery Mammal AYesFull orbital bone enclosureMystery Mammal BNoOpen orbital cavity

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