Cytochrome-C Comparisons Lab (Page 4 of 4) in pdf

Cytochrome-C Comparisons Lab Page 4

Name

QUESTIONS:

1. How many Cytochrome C amino acid sequence

differences are there between chickens and turkeys?

2. Make a branching tree, or cladogram for chickens, penguins, and turkeys.

3. a.

Predict the number of Cytochrome C amino acid

sequence differences you would expect to see between i. horse and zebra

ii. donkey and zebra

b. What other information did you use to make this prediction?

4. Use this Cytochrome C sequence difference data to add a branch to the tree on page 3.

silkworm

horse

penguin

snake

tuna

yeast

wheat

moth

tomato

hornworm

moth

5. List three other things used to determine how organisms are related to each other.

6. Explain why more closely related organisms have more similar Cytochrome C.

7. Other data, including other genes, suggests that fungi are more closely related to animals than plants.

What are some reasons that the Cytochrome C data suggests that fungi, plants, and animals are equally

distantly related?

Cytochrome-C Comparisons Lab Page 4