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

7384 Views

See similar Biology A Level tutors

Related Biology A Level answers

All answers ▸

Describe how mRNA is produced in the nucleus of a cell.


How should I study for the A-level exams?


Diabetes can damage the nervous system. Explain how this may alter the response of heart rate to changes in blood pressure.


What is a niche?


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