Cis-action
= Cis-action
{wiki=Cis-action}
Cis-action refers to a regulatory mechanism in genetics where a regulatory element, such as a promoter or enhancer, influences the expression of a gene located on the same DNA molecule (or the same chromosome). Essentially, cis-regulatory elements are sequences of DNA that are located adjacent to the gene they control, and they can enhance or suppress the transcription of that gene.