One difference between gene regulation in prokaryotes and eukaryotes is that prokaryotes do not store their genes in a nucleus like eukaryotes do. This structural difference affects the organization and regulation of their genetic material, with prokaryotic transcription and translation occurring concurrently in the cytoplasm, whereas eukaryotic processes are compartmentalized within the nucleus.
The other options mentioned have inaccuracies:
- Eukaryotes typically do not use operons; this is a feature of prokaryotes.
- Prokaryotes do not remove exons from mRNA; they do not have introns as eukaryotes do.
- Both prokaryotes and eukaryotes can transcribe genes in response to environmental stimuli, but not randomly as stated in the option.