Genetic signals refer to the specific sequences of DNA that provide instructions for the development and functioning of living organisms. These signals can determine traits such as eye color, height, and susceptibility to certain diseases. They are encoded in the genes, which are segments of DNA that carry hereditary information. In addition to individual traits, genetic signals also play a crucial role in processes like cell division and metabolism. Scientists study these signals to understand how genes interact with each other and the environment, which can lead to advancements in fields like medicine and agriculture, including the work of researchers like Gregor Mendel and CRISPR technology.