Deoxyribonucleotides are the building blocks of DNA, the molecule that carries genetic information in living organisms. Each deoxyribonucleotide consists of three components: a deoxyribose sugar, a phosphate group, and a nitrogenous base. The four types of nitrogenous bases in DNA are adenine, thymine, cytosine, and guanine. When deoxyribonucleotides link together, they form long chains, creating the structure of DNA. The sequence of these bases encodes genetic instructions, which are essential for processes like cell division and protein synthesis. This sequence is unique to each organism, contributing to its individual traits.