The coding sequence of the green fluorescent protein gene (GFP)is placed under the control of an enhancer active in neurons.When this transgene is introduced into flies, GFP will be expressed in
A)all neurons or a subset of neurons.
B)all fly cells that have the transgene.
C)all cells in the early embryo and then GFP will be silenced.
D)all cells in the late embryo after neurons form.

Question

Quizplus · Accepted Answer

The enhancer active in neurons ensures that the GFP gene is expressed specifically in neurons or a subset of neurons, depending on the specificity of the enhancer. This allows for targeted expression rather than ubiquitous expression in all cells.

The Coding Sequence of the Green Fluorescent Protein Gene (GFP)is