A genome is the complete set of instructions that tells a living thing how to grow, develop, and work. Think of it like a recipe book: it contains all the instructions that tell a creature how to live. A person's genome includes all of their genetic information - the blueprint for who they are! That includes things like hair color, eye color, and height. But it also includes things that aren't as easy to see like risk for diseases or even things like how your body responds to certain medicines. By looking at a person's genome, scientists can learn a lot about the person and can make better decisions about how to keep them healthy.