Question

operons group of answer choices can only be regulated by gene activator proteins. are transcribed by rna polymerase ii. contain a cluster of genes transcribed as a single mrna. are commonly found in eukaryotic cells.

Answer 1

Operons contain a cluster of genes transcribed as a single mRNA

What are operons ?

An operon is a collection of genes that are all translated into a single messenger RNA (mRNA) molecule, which in turn codes for a number of different proteins. Prokaryotes frequently contain such polycistronic mRNA.

• An operon is a functional grouping of structural genes and an operator gene. The regulator gene, which generates the repressor protein molecule, ultimately regulates the activity of the operon.

• The RNA polymerase transcribes the operon and produces some mRNAs when it attaches to the promoter. Along with the promoter, most operons also contain other regulatory DNA sequences. These regions serve as the binding sites for regulatory proteins that alter the operon's expression by turning it on or off.

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