A gene that codes for a protein was removed from a eukaryotic cell and inserted into a prokaryotic cell. Although the gene was successfully transcribed and translated, it produced a different protein than it produced in the eukaryotic cell. What is the most likely explanation?
A. Unlike eukaryotes, which have three different RNA polymerases, prokaryotes have a single RNA polymerase.
B. Eukaryotic transcripts have a 5' cap while prokaryotic transcripts do not.
C. Eukaryotic genes often contain introns while prokaryotic genes do not.
D. There are slight differences in the genetic code for prokaryotes and eukaryotes.
Answer: C
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