Citation:
Pyrimidines are one of the two types of nitrogenous bases found in nucleotides, which make up DNA and RNA. The three pyrimidines are cytosine (C), thymine (T), and uracil (U).
A pyrimidine base that pairs with guanine in both DNA and RNA.
A pyrimidine base that pairs with adenine only in DNA.
A pyrimidine base that replaces thymine in RNA; it also pairs with adenine.