Cladograms and Phylogeny
1.) What are the following?
Eukaryota:
Archaea:
Bacteria:
2.) How far back can we trace the history of life?
3.) What is the best definition of lineage? (write the full definition, not just the letter)
4.) Place the names of the organisms on the line where
they belong. Then, indicate which line shows the
district history, the shared history, and the common
ancestor for the caiman and the parrot.
5.) Common ancestry is the basis for determining how _____________ organisms are ____________.
6.) According to this diagram, which of organisms (A, B, or C) are more closely related to one another?
Use a circle to indicate the common ancestor between organism A and C.
Indicate which line shows the shared history between organism A and C.
Indicate which lines shows the unique history of organism B.
7.) What are cladograms?
8.) What are cladograms based on?
9.) Label each of the inherited features on the image to
the right (A-F).
10.) What is the common featured shared among all of these organisms?
11.) How do we know the skull openings were present in the common ancestors if we can't see them today?
12.) Complete the tables below:
Cladogram
Below is a simple cladogram indicating the proposed
relationship among the caiman, parrot, and T. rex.
Additional data
This data table indicates the presence or absence of eleven additional features
for the caiman and the parrot. Notice that the information about the T. rex has
not been filled in. You will need to make that determination based upon what
you have learned.
Questions:
Did T. rex have an amniotic egg?
Was T. rex warm-blooded or cold-blooded?
Could T. rex have had feathers?
Did T. rex have color vision?
How many chambers were there in T. rex's heart?
Did T. rex sing to its offspring?