Why do eukaryotes have a more complex system of gene regulation than prokaryotes? Use an example to explain your reasoning.

Eukaryotes have a more complex system of gene regulation than prokaryotes because eukaryotic gene expression requires more steps. Each level of gene expression—transcription, post-transcription, translation, and post-translation—has its own regulation. For example, transcription is regulated by modifications to histone proteins that remodel wrapped DNA, making it accessible.