Mass spectrometry demonstrated that a bacterial protein and one section of a eukaryotic protein had amino acid sequences that were 90% similar. What else is likely to be true (but would still have to be tested experimentally)? a. The similar sequences are regulated by the same interactions with other amino acids.
b. The similar sequences have very similar quaternary structures.
c. The similar sequences evolved from the eukaryotic protein into a more refined form.
d. The similar sequences share similar functions and shapes.