The diagram shows the chemical structure of a nucleotide. a molecular structure represents a nitrogenous base as two polygons, then a 5-carbon sugar as a pentagon, and then a phosphate group as a sphere. how does a polymer of nucleotides encode genetic information? a. by the sequence of nitrogenous bases b. by the sequence of 5-carbon sugars c. by attaching sulfur groups to the phosphate groups d. by attaching carbohydrates to the 5-carbon sugars