Green fluorescent protein (GFP) is a small protein that emits bright green fluorescence in blue light. It was first isolated from the jellyfish.
The gene coding for GFP can be expressed in bacteria, and so it is often used as a marker to show successful uptake of a gene by the bacterium.
What is the advantage of using the gene for GFP to produce easily detectable fluorescence, rather than using a gene for an enzyme that produces a fluorescent substance?
Ps. The original question I got was to explain about the disadvantage, which is that GFP may not fluoresce very brightly and so may be difficult to detect.
Thank you for your help.