A theoretical protein, blue2, is coded for by the blu2 gene. This protein codes for a blue pigment used by the organism to protect it from damaging UV rays from sunlight. The enzyme alterase binding to the blu2 operator halts transcription of blue2. A blu2 operator mutation causes a conformational change that does not allow alterase to bind to operator.

What kind of gene regulation of blue2 is being used?

Positive
Negative
Secondary
Splicing

Negative regulation

Explanation:

The enzymes involved are:

blue 2 protein

enzyme alterase binds to blue 2 operator alters blue 2 transcription.

Mutation in blue 2 operator detest alterase activity.

In negative regulation the alterase ( repressor) binds to the blue gene operator and prevents the transcription of blue gene and hence altering the blue 2 protein production.

After mutation in blue 2 gene operator due to confirmational change alterase does not bind to operator and hence blue 2 gene gets transcribe when transcription factors bind to promoter.

prokaryotic cells do not have a nucleus in which the dna is stored in, it floats freely inside the cell.

eukaryote cells do have a nucleus in which the dna is stored in.