Scelta multipla
Which of the following is true about operons?
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16. Regulation of Expression
Prokaryotic Gene Regulation via Operons
Scelta multipla
In prokaryotic genomes, groups of functionally related genes along with their promoters and operators are found together in __________.
A
a repressor
B
a regulatory gene
C
an enhancer
D
a transcription factor
E
an operon
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Understand that prokaryotic genomes are organized differently from eukaryotic genomes. In prokaryotes, genes are often organized into operons.
An operon is a cluster of genes that are transcribed together and share a single promoter. This allows for coordinated regulation of genes that are functionally related.
The operon model includes components such as the promoter, operator, and the structural genes. The promoter is where RNA polymerase binds to initiate transcription.
The operator is a segment of DNA that acts as a switch, controlling the access of RNA polymerase to the genes. It is typically located between the promoter and the structural genes.
In the context of the problem, the correct term that describes a group of functionally related genes along with their promoters and operators in prokaryotic genomes is 'an operon'.
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