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I would guess that if a gene is not functioning normally then controlling the expression of that gene would be beneficial.
regulation of gene expression
Gene expression is the process by which inheritable information from a gene, such as the DNA sequence, is made into a functional gene product, such as protein or RNA.
the coordinated control of gene expression in bacteria
yes
cell membrane
control of both RNA splicing and chromatin remodeling
The expression of a gene is called the phenotype.
The operon often controls the transcription of prokaryote genes.
Regulation of gene expression is necessary because organisms need to be able to adapt to their environments and perform different functions.
The promoter allows the gene to be transcribed. It helps RNA polymerase find where a gene starts. An operator is a DNA segment that turns the gene "on" or "off." It interacts with proteins that increase the rate of transcription or block transcription from occurring.