Gene

A gene is a tiny part of your body that contains important instructions for how your body should look and work. It’s like a recipe that tells your body what ingredients it should use to make you look and act the way you do. People have lots of genes — some genes tell your body to make eyes, some make your hair curly, and some make you strong or fast. Everyone has a unique set of genes based on their family, and that’s why we all look different.