Answer: nitrogenous bases and sugar-phosphate units
Explanation: DNA (Deoxyribonucleic Acid) is a genetic information-carrying molecule that is present in all cells. The genetic code is made up of nitrogenous bases (adenine, thymine, cytosine, and guanine), while sugar-phosphate units serve as the DNA molecule's backbone. Adenine and thymine and cytosine and guanine are two nitrogenous bases that couple together specifically through hydrogen bonding to create the distinctive double helix structure of DNA.
Although they are a component of the sugar component of the sugar-phosphate backbone and not directly related to the genetic information, carbon, hydrogen, and oxygen are also found in DNA.
Nucleotides are chemical building units that make up DNA. A phosphate group, a sugar group, and one of four different nitrogen bases make up these building components. Adenine, guanine, cytosine, and thymine are the nitrogenous bases. Therefore, nitrogenous bases and sugar-phosphate units are the right response.