What are the different stages of gene regulation?
Answers
Answer:
Explanation:
There are three levels of regulating gene expression
1) transcriptional control - whether and how much a gene is transcribed into mRNA.
2) translational control- whether and how much an mRNA is translated into protein.
3) post-translational control- whether protein is active or inactive and stable or degraded.
Protein synthesis begins at transcription and ends at translation. It involves many steps. The regulation of gene expression can happen at any of these steps. When we consider eukaryotes, the gene regulation occurs at any of the below mentioned steps.
- Transcriptional level( during the formation of the primary transcript)
-Processing level(at the stage of splicing)
- During transport of mRNA from the nucleus to cytoplasm
- Translational level
In prokaryotes the main site of gene regulation is transcription initiation.
An example for coordinated gene regulation is the development and differentiation of embryo into adult.
All three domains of life use postive regulation, negative regulation and co-regulation.