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.
Regulation is integral to many current definitions of the gene. In particular, one current textbook definition of a gene in molecular terms is the entire nucleic acid sequence that is necessary for the synthesis of a functional polypeptide (or RNA) (Lodish et al. 2000).