Question

Based on the amino acid sequence data for the Cytochrome-C protein, chimpanzees and humans share an identical coding sequence. What other species identified on the chart has a coding sequence that is most closely related to the humans and chimpanzees and most distantly related? Explain your answer.

Answer 1

I think you're missing the chart here. But when you are comparing how related certain organisms are, you should look at evolutionary trees about them. Cytochrome-C is an important protein, but mutations occur in its amino acid sequence on a certain, estimated rate(so in a way this works as a molecular clock that can be used to track how long it has been since two species shared a common ancestor). So the fewer mutations (changes in nucleotides) there are the more closely two organisms are actually related.

Answer 2

they didn't give any chart to me /:

Answer 3

Oh, then perhaps you should ask for the chart since it is mentioned in the question? There are so many different organism on this planet that it'd be quite impossible to start listing all the close relatives of human species based on molecular differences. :)

Did they give any evolutionary/phylogenetic trees then?



^they look kinda like this crude drawing here.