Eukaryotes use 6 primary ways to control the expression of genes.
- Transcriptional control affects the selection of genes to be transcribed and the rate of transcription.
- Posttranscriptional control affects the processing of mRNA.
- mRNA transport affects the rate at which mRNA leaves the nucleus.
- mRNA degradation occurs because some mRNA transcripts contain sequences that cause them to be degraded prior to translation.
- Translational control affects how long mRNA remains in the cytoplasm and the ability of mRNA to bind to ribosomes.
- Posttranslational control occurs by regulating the additional processing that proteins require to be functional or through feedback inhibition.