What is the term for the linkage between sugar molecules in nucleic acids?

The linkage between sugar molecules in nucleic acids is known as a phosphodiester bond. This bond specifically connects the 5' carbon atom of one sugar molecule to the 3' carbon of another sugar molecule, forming the backbone of the nucleic acid structure. In nucleotides, which are the building blocks of nucleic acids like DNA and RNA, the phosphate group attached to the sugar forms these phosphodiester linkages, creating a stable and continuous chain.

Understanding this bond is essential because it plays a crucial role in maintaining the structure and integrity of nucleic acids. The phosphodiester bond allows for the formation of long strands, which are fundamental for the storage and transmission of genetic information.