Describe the use of promoters in gene technology

Promoters switch genes on, if a gene is inserted into a bacterium it needs a promoter added to coordinate with the gene for the chanracteristic to be expressed.
For human insulin production in bacteria:
1) Gene intersted next to the B-galactosidase (lactase) gene so that they share a promoter.
2) Bacteria are grown in a medium containing lactose.
3) Lactase gene is switched on by promoter which switches on the insulin gene at the same time.
4) B-galactosidase and Human insulin are synthesised by the Bacteria, excreted and harvested for medical use and research. 

RI
Answered by Roslyn I. Biology tutor

7253 Views

See similar Biology A Level tutors

Related Biology A Level answers

All answers ▸

Describe the role of tRNA in the production of a protein


Can you explain the importance of the refractory period within the axon?


Describe the structure of the human gas exchange system and explain how we breath in and out.


Understanding HIV, vaccines and monoclonal antibodies


We're here to help

contact us iconContact ustelephone icon+44 (0) 203 773 6020
Facebook logoInstagram logoLinkedIn logo

MyTutor is part of the IXL family of brands:

© 2025 by IXL Learning