Hello, I waswondering if anyone could help me answer an AP Biology questionabout

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Hello, I waswondering if anyone could help me answer an AP Biology questionabout cytochromes. My textbook doesn't give a very detaileddescription of the function of cytochromes, and the answer choicesprovided seem to be extremely detailed given the general gist ofthe question. Thanks!

11)When cytochrome c molecules are compared, yeasts and molds arefound to differ by approximately 46 amino acids per 100 residues(amino acids making up a protein), whereas insects and vertebratesare found to differ by approximately 29 amino acids per 100residues. What can one conclude from these data?

a.Very little can be concluded unless the DNA sequences for thecytochrome c genes are compared.

b.Yeasts evolved from molds, but vertebrates did not evolve frominsects.

c.Insects and vertebrates diverged from a common ancestor morerecently than did yeasts and molds.

d.Yeasts and molds diverged from a common ancestor more recently thandid insects and vertebrates.

e.The evolution of cytochrome c occurred more rapidly in yeasts andmolds than in insects and vertebrates.

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