| Jacob and Monod called these regulated stretches of DNA operons. |
| Despite the absence of operons, eukaryotes are still capable of a very fine level of control over gene transcription. |
| Ribosomal RNA operons are highly expressed genes and their products have a highly conserved secondary structure. |
| Horizontal transfer of whole genes and operons between divergent species is a frequent event. |
| In bacteria, these genes are clustered in operons, while in eukaryotes, they are widely dispersed throughout the genome. |
