When many genes of an organism are globally regulated, those genes are considered as regulon genes. What is the common theme of such genetic regulation?
A) Genes of regulons are silenced by a common repressor.
B) Genes of regulons are able to transcribe mRNA independent of regulation.
C) Genes of regulons are much more stable than non-regulon genes.
D) Genes of regulons are much less stable than non-regulon genes.
E) Individual genes of regulons are regulated independently of each other.

Question

Quizplus · Accepted Answer

The common theme of global regulation in regulon genes is that they are silenced by a common repressor. This means that the expression of all genes within a regulon is controlled by a single regulatory protein that can bind to a common regulatory site on the DNA and prevent transcription. When the repressor is removed, transcription can resume for all the genes in the regulon simultaneously.

When Many Genes of an Organism Are Globally Regulated, Those