Question

components of a nucleotide a nucleotide is made up of a sugar, a phosphate group and a dna (dropdown)

Explanation:

A nucleotide (in both DNA and RNA) consists of three components: a pentose sugar (deoxyribose in DNA, ribose in RNA), a phosphate group, and a nitrogenous base (adenine, thymine/uracil, cytosine, guanine). The dropdown here likely should be "nitrogenous base" instead of "DNA" as DNA is a polymer of nucleotides, not a component of a single nucleotide.

Answer:

The correct component to fill in the dropdown (instead of "DNA") is a nitrogenous base. A nucleotide is made up of a sugar, a phosphate group, and a nitrogenous base.