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is passed from parents to children through structures called genes. These genes serve as individual instruction packets that determine specific traits, like eye color or height.

Meiosis is the special cell division that creates sperm and egg cells, cutting the DNA code exactly in half. This ensures that when a sperm and egg combine, the future baby gets a complete, normal set of instructions.

DNA is the instruction manual for all living things. It uses just four chemical letters to write out the recipes that build your body and keep you alive.