Answer :
A(n) operon is a stretch of DNA consisting of an operator, a promoter, and genes for a related set of proteins, usually making up an entire metabolic pathway.
An operon is a functional piece of DNA in genetics that houses a collection of genes that are all regulated by the same promoter. The genes are combined during transcription to form an mRNA strand, which is then either translated in the cytoplasm as a single unit or split into monocistronic mRNAs, which are translated individually and consist of many strands of mRNA that each encode a single gene product. The operon's genes as a result either express themselves simultaneously or not at all. An operon is defined by the co-transcription of many genes.
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