Question

what is an operon? a group of genes that regulate together and have a related job. a structure within the cell that carries out photosynthesis. a type of rna involved in gene regulation.

Explanation:

An operon is a cluster of functionally - related genes under the control of a single promoter in prokaryotes. These genes are transcribed together and have related functions in the cell's metabolism or response to the environment. The option about photosynthesis refers to chloroplasts, and the option about RNA is incorrect as an operon is not a type of RNA.

Answer:

A. A group of genes that regulate together and have a related job.