Describe and characterize the role of regulatory regions of genes.

An operator is a regulatory region of DNA that is capable of attaching a repressor protein, which is encoded by the corresponding lac gene. If the repressor is attached to the operator, then RNA polymerase cannot move along the DNA molecule and synthesize mRNA.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.