DNA contains all the information a cell needs in order to make certain proteins. Where are the protein-synthesizing instructions stored on a DNA molecule? A. The deoxyribose portion of certain genes codes for the production of certain proteins. B. Every gene on certain chromosomes codes for the production of different kinds of uracil, which then promotes protein synthesis. C. The phosphate group in a strand of DNA codes for the production of amino acids. D. Certain sequences of nucleotides code for the production of specific proteins.