Question: what are the steps of dna made of?
Answer: DNA is made up of four nucleotides — the building blocks of nucleic acids — which are composed of a nitrogenous base, a five-carbon sugar (ribose or deoxyribose), and at least one phosphate group. Adenine (A), Thymine (T), Guanine (G), and Cytosine (C) are called nucleotides.