Final answer:
DNA and the Central Dogma of Molecular Biology - The molecule that guides the construction and operation of an organism's body is called DNA. DNA contains instructions for all the proteins your body makes, and determines the structure and function of cells.
Step-by-step explanation:
DNA and the Central Dogma of Molecular Biology
The molecule that guides the construction and operation of an organism's body is called deoxyribonucleic acid (DNA), abbreviated as DNA. This large molecule contains discrete segments with specific instructions: these segments are called genes.
DNA contains instructions for all the proteins your body makes. These proteins determine the structure and function of cells. The instructions for making proteins with the correct sequence of amino acids are encoded in DNA.