A group of coordinately regulated structural genes with related metabolic functions, plus the promoter and operator sites that control their transcription, is called a/an .

They are called promoter and regulatory genes.

Explanation:

There are different genes responsible for regulating transcription:

These are the inhibitors, promoters and regulators.

Regulatory genes are in charge of regulating that promoter or inhibitor genes remain intact or do not present mutations.

Promoter genes promote cell replication, hence transcription.

In the case of malignant or benign neoplasms, there must be yes or if the affection of a regulatory gene plus the affection of an inhibitory or promoter gene.

if your own plato the answer is b. the fern transitioned from sporophyte generation to gametophyte generation.

not sure if this is what you'r looking for nnew= nold