2. bow down-bend one's knee or body, or lower one's head; He bowed before the King; She bowed her head in shame. bow. conge, congee-perform a ceremonious bow. gesticulate, gesture, motion-show, express or direct through movement; He gestured his desire to leave.
Sections. Definition. Gene regulation refers to the mechanisms that act to induce or repress the expression of a gene. These include structural and chemical changes to the genetic material, binding of proteins to specific DNA elements to regulate transcription, or mechanisms that modulate translation of mRNA. News and Comment.
Gene regulation can occur at any point during gene expression, but most commonly occurs at the level of transcription (when the information in a geneâs DNA is transferred to mRNA). Signals from the environment or from other cells activate proteins called transcription factors.ene regulation can occur at any point during gene expression, but most commonly occurs at the level of transcription (when the information in a geneâs DNA is transferred to mRNA). Signals from the environment or from other cells activate proteins called transcription factors.