Which of the following mechanisms is used to coordinate the expression of multiple, related genes in eukaryotic cells?
A) Environmental signals enter the cell and bind directly to promoters.
B) A given gene may have multiple enhancers, but each enhancer is generally associated with only that gene and no other.
C) The genes are organized into a large operon, allowing them to be coordinately controlled as a single unit.
D) A single repressor is able to turn off several related genes.

Question

Quizplus · Accepted Answer

Gene regulation in eukaryotic cells can be complex, and often involves the coordination of multiple genes that are related in some way. One mechanism that is used to achieve this coordination is the use of enhancers, which are DNA sequences that can bind to transcription factors and help to activate gene expression. A given gene may have multiple enhancers, and each enhancer may be associated with other genes that are related in some way. By using different combinations of enhancers, cells can fine-tune the expression of related genes in response to different signals and developmental cues.

Which of the Following Mechanisms Is Used to Coordinate the Expression