Final answer:
DNA provides information about pathogens and food-borne illness through their genetic makeup.
Step-by-step explanation:
DNA provides information about pathogens and food-borne illness through their genetic makeup. DNA is the genetic material that carries the instructions for the development, functioning, and reproduction of all living organisms, including pathogens. By analyzing the DNA of pathogens, scientists can identify the specific genetic traits that make them harmful and understand how they can cause food-borne illnesses.