Question

which nucleotide is only found in dna?
thymine
cytosine
guanine
uracil

Explanation:

Nucleotides are the building blocks of nucleic acids (DNA and RNA). DNA contains four nucleotides: adenine (A), thymine (T), cytosine (C), and guanine (G). RNA contains adenine (A), uracil (U), cytosine (C), and guanine (G). Thymine is unique to DNA, while uracil is unique to RNA. Cytosine and guanine are found in both DNA and RNA.

Answer:

thymine