Gene regulation is much more complex in eukaryotes than prokaryotes 2. Eukaryotes have larger, more complex genomes, which are much more highly organized 3. Genes may be condensed into heterochromatin or less tighly packed and available for transcription 3. Multiple repeat sequences are 1-10 base pairs long 3.
Transcription factors regulate whether genes are transcribed.
RNA Polymerase binding requires transcription factors 1. Transcription factors known as activators bind to control elements near promoter or within the promoter region to stimulate transcription 2. A tail triggers removal of 5 cap and mRNA is rapidly broken down 2.