Let's stop again to review the main points from this section.
Within this folder we examined the importance of looking at shared inherited features to determine evolutionary relationships.
Once we understand those relationships, we can answer many kinds of questions about the history of life—even what T. rex tasted like.
What evidence did we use to determine that T. rex tasted like chicken?
a) T. rex's heel bone does not have a bump
Let's try another question.
Because T. rex was bipedal and had a reduced number of fingers, we can infer:
a) that T. rex was more closely related to birds than to crocodiles
b) that T. rex and birds inherited these features from a common ancestor
c) that T. rex probably shares more features with birds than with other vertebrates
Our final folder contains a Special Assignment—Solving T. rex's Identity Crisis.
By completing the assignment, you and your colleagues will apply what you have learned to answer some more questions about T. rex.
If you are ready, let's go!
Ooops. Since the heel shape is unique to caimans, we can't use that as evidence. Try again!
Close! That's one piece of evidence we used, but it isn't the only one on the list. Try again!
Close! Remember that the shape of the heel bone is unique to caimans. Try again!
Close! We can infer this, but it isn't the only inference on the list that we could make. Try again!
Ooops! We can make some inferences based on the features we studied. Try again!