What Kind of Gene Expression Controls are Revealed by Operon

Question

What kind of gene expression controls are revealed by operon fusions?
A) transcriptional
B) translational
C) both transcriptional and translational
D) posttranslational
E) pretranscriptional

Accepted Answer

Operon fusions involve the fusion of a gene of interest to a reporter gene, such as lacZ, resulting in the expression of the reporter gene under the control of the regulatory elements of the gene of interest. This allows for the determination of the regulatory elements that control the expression of the gene of interest, including transcriptional controls. Therefore, operon fusions reveal transcriptional controls of gene expression.