Question from Exam 1

I missed a question on exam 1, and I'm still not sure what the answer is after looking at my notes.

What evidence is there for common descent of life on Earth?
- I know that the fact that Chimpanzes' DNA is 98% similar to humans DNA is evidence.
- But, what else would count? Would it be that DNA is used as molecule of heredity for all cells?
- How about: transcription and translation used by all cells?
-Or,Phospholipid bilayer is used as cell membrane by all cells?
- Or, ATP is used as energy currency by all cells?

I could use your help on this one, Dr. Robson. I got hung up on the evidence part.

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