What Is a Regulatory Gene?
It is a gene that regulates protein synthesis. It can make a structural gene synthesize an enzyme when it is needed, and stop synthesis when it is not needed. It can regulate structural genes on different chromosomes.
Regulatory gene
Right!
- It is a gene that regulates protein synthesis. It can make a structural gene synthesize an enzyme when it is needed, and stop synthesis when it is not needed. It can regulate structural genes on different chromosomes.
- Other genes that control the rate of product synthesis away from the gene, as well as control of the synthesis of obstacles, the latter can inhibit the role of the operator, thereby stopping the transcription of structural genes in the operon that it controls.
- Regulatory gene
- regulator gene
- Other genes that control the rate of product synthesis away from genes. Can control the synthesis of obstacles, which can inhibit the role of the operator, thereby stopping the transcription of structural genes in the operon it controls. The main function of this gene is to produce a class of inhibitors to restrict the activities of other genes. That is, an effective piece of DNA that can be transcribed and translated to produce a regulatory protein that interacts with the operator to control the activity of the operator. Its role in the cell is like an automatic control system, which enables the cell to synthesize an enzyme when it is needed, and stop synthesis when it is not needed. If the regulatory gene is mutated, when the enzyme is not needed, it can still promote the production of normal enzymes by the structural gene, resulting in waste.
- In embryonic development, there are some regulatory genes that can produce proteins that can determine whether the embryo develops the front end or back end, dorsal or ventral, etc. (Hox gene), or determines the construction of specific organs, such as the eye (pax gene). The sponge has only one Hox gene, eight arthropods, and four Hox gene clusters in mammals, which contain 38 genes. Both mice and Drosophila have six Hox genes, and their common ancestors, protozoan and posterior, must have 6 Hox genes.