Which from following nitrogen bases of nucleic acids is derived from purine?

Step-by-step solution

The nitrogenous bases in nucleic acids fall into two structural classes: purines with double-ring structures and pyrimidines with single-ring structures. Purine bases include adenine (A) and guanine (G), while pyrimidine bases include cytosine (C), thymine (T) in DNA, and uracil (U) in RNA. Among the given options, thymine, cytosine, and uracil are pyrimidine derivatives, while adenine is the purine derivative. The correct answer is D