I need help ASAP!! Xenite Cladogram Portfolio Biology.
Portfolio Activity, Part 1
Fibe species of Xenite -an imaginary animal- have been found on a planet in another solar system. Based on the order of the rock layers in which fossils were found, species A appears to be the oldest and probably the most primitive. There is no evidence to support the relative age of the other species of Xenite.
*SEE PHOTO 1* (A-E species)
Be the evolutionary biologist, and complete the following activities to build a cladogram of Xenites
1. Create a table noting which species of Xenite has each characteristic below, marking each yes or no.
a. spine
b. eyestalks
c. tail
d. mouth
*SEE IMAGE 2* (my table)
2. Study your table, and figure out the order of evolution of each character. You have been given reason to believe that, based on the fossil record, Xenite A is the ancestral species. For Xenites, consider what appear to be homologies and analogies. Create your cladogram for Xenites.
Portfolio Activity, Part 2
1. A new Xenite species has been discovered. There is no fossil evidence to suggest the relative evolutionary age of this species.
*SEE IMAGE 3* (F new species)
2. Explain how you created your cladogram and:
a. identify which derived characters were homologies or analogies.
b. explain the evolutionary history of the organism shown by your tree.
c. explain how you used new evidence to revise your cladogram.
*SEE IMAGE 4* (new chart of characteristics)
YOU ONLY NEED TO CREATE ONE CLADOGRAM WITH ALL OF THE XENITE SPECIES A-F!!!
1. Determine the order of evolution of the different traits in Xenites. You are given the information that Xenite A is the OLDESR species.
Hint: In this particular hypothetical example, the traits are ADDITIVE, which means that the oldest “versions” of the species should have the fewest of the listed traits….and the newest “version” of the species should have multiple traits.
Note: Because the information given here is incomplete, there may be more than one possible answer. Give some reasons as to why you ordered the version of the xenites in the way that you did.
Questions to ask yourself when making your table:
Which of the traits would be the most valuable to survival?
Did any of the traits appear at the same time?
Did any of the traits disappear in later generations of xenites?
Two versions of the xenite DO NOT have a mouth. Don’t assume this means the creature cannot eat. Clearly, if the species existed, and reproduced, it must have had some other means to take in food.
ORDER OF EVOLUTION
1st | A
2nd | D
3rd | B/E
4th | F
5th | C
(I think this is correct)
Now, use the information in your table above to complete your cladogram. Make sure to move the images of the proper xenite from the options below the template to fill in the blanks for your cladogram.
*SEE IMAGE 5* ( the cladogram I did not sure if its good/accurate)
Review your completed activities that are to be submitted to your teacher, and consider the following:
REFLECTION QUESTIONS!!!
1. How did you choose the structure the table of derived characteristics of Xenites (what were the rows and columns an what order did you use?) When you added Xenite F, did you reorganize the table? if so, why?
2. What features were the most difficult to place in a cladogram? why?
3. Do you think your answer is the only right answer? Explain.
4. Give an example of a piece of evidence that would change your cladogram.
For full credit you must include:
A completed trait table (I already did those just check if they're correct)
A completed “order of appearance” table (I already did those just check if they're correct)
A complete cladogram (I think I did it correct but not sure lmk)
Answers to the 4 reflection questions (please answer the reflection questions)
