What is the most common place in the process of gene express

What is the most common place in the process of gene expression for regulation? How is this generally accomplished?  

Solution

The most common place in the process of gene expression for regulation is the promoter region of the DNA, which is a region towards the 5\' end where transcription factors bind to nucleotides leading to binding of RNA polymerases leading to initiation of transcription. This process of gene expression is under the positive influence of transcription factors known as activators that bind to regions called \'enhancers\' leading to an increase in the rate of transcription. While repressors factors called silencers decrease the rate of transcription.