If the inducer [allolactose] is present in the negative control then it will bind to the repressor decreasing its ability to bind to the operator due to which the transcription begins again and the operon is turned on.
Lac Operon is a set of three genes z, y & a which are regulated under the same promoter which regulates the amount of lactose production in the cell.
An inducer is a molecule that has the ability to induce or activate the operon. ex- in the case of the lac operon, allolactose acts as an inducer.
A repressor is a molecule that will repress or restricts the transcription of the genes of the operon, as a result, the operon will be switched off.
When the lac operon is under negative control, with no CAP [catabolite repressor protein] binding activity, the repressor remains active and thus binds to the operator region of the operon, as a result, no transcription takes place and the operon will be switched off.
But if the inducer will be present even in the negative control then the transcription takes place and the operon will be on.
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Answer:
The pituitary gland refers to a small gland, which is situated in the sella turcica. It is considered the master gland of the body. The pituitary gland comprises two prime parts, the posterior pituitary gland and the anterior pituitary gland. The anterior pituitary gland produces six hormones and discharged them into the bloodstream.
The following are the hormones produced by anterior pituitary gland:
1. The growth hormone that monitors metabolism, growth and body composition.
2. Adrenocorticotropic hormone that instigates the adrenal glands to produce steroid hormones, mainly cortisol.
3. Follicle-stimulating hormone and luteinizing hormone, also called gonadotropins, which functions on the testes or ovaries to instigate the production of sex hormone, and maturity of sperm and egg.
4. The thyroid-stimulating hormone that instigates the thyroid gland to discharge thyroid hormones.
5. Prolactin that instigates the production of milk.
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C<span>ommon names can be confusing because they vary among languages and from place to place , SO (D) hope this helps:)</span>
