Regulator gene A gene whose product can promotor or prevent the TRANSCRIPTION of structural genes, which may or may not be adjacent to other regulator genes, and may even be on another chromosome.

• 调节基因：这种基因的产物可以促进或抑制结构基因的转录，其可能与其他的调节基因相连，也可以不相连，甚至两者可以不在同一染色体上。