What molecule seems to link the nucleotides together?

The molecule that links nucleotides together in a nucleic acid strand is called phosphodiester bond. This bond forms between the phosphate group of one nucleotide and the hydroxyl group on the sugar of the next nucleotide, creating a sugar-phosphate backbone. This structure is essential for the stability and integrity of DNA and RNA, allowing them to maintain their sequence and function in genetic information storage and transfer.