Genetic switches
A) stop development.
B) help various modules develop differently.
C) ensure that all modules develop into the same type.
D) do not involve promoters and transcription factors.
E) play no role in integrating positional information in the embryo.

Question

Quizplus · Accepted Answer

Genetic switches (such as enhancers and repressors) play a crucial role in regulating gene expression and determining the fate of cells during development. They can help various modules (groups of cells or tissues) in the embryo to develop differently by turning on or off specific genes. This contributes to the overall complexity and diversity of multicellular organisms. Switches do not stop development altogether, nor do they ensure that all modules develop into the same type. They often involve promoters and transcription factors, although not exclusively. Lastly, genetic switches are essential for integrating positional information in the embryo by responding to signals from adjacent cells and tissues.

Genetic Switches