Which Of The Following Statements Best Defines The Term Operon

What Is an Operan?

An operon is a DNA region that contains the coding sequence for more than one gene controlled by the same promoter. The tryptophan operon codes the enzymes required for tryptophan biosynthesis. This operon was first discovered by Jacques Monod in 1953.

An operon is a group of closely related genes that are controlled by one promoter. These genes are transcribed using RNA polymerase. This protein binds to promoters, and transcribes a gene’s coding region. This process is known as allosteric regulatory in bacterial cells. Allosteric regulation is when a small molecule binds with a protein and alters its activities by binding to a particular site. In the lac operon, the structural genes are responsible for lactose metabolism, and the lac operon is active in the presence of lactose.

Repression and activation sites are common in operons. The activation site binds to an RNA polymerase. This binds to the operator binding sites and initiates the transcription process. In addition, operons may contain termination sequences, which appear after the last protein-coding region.

An operon is a group of genes on a DNA molecule that typically contains four to eight genes. It is a functional unit in the cell and consists of a promoter and operator, as well as a couple of structural genes that carry the actual code. The promoter is a key component of transcription. It is where the RNA polymerase binds to initiate the creation and modification of messenger RNA molecules.

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