Question

Differentiate DNA and RNA based on nitrogenous bases.

Answer 1

1. DNA and RNA both have four bases (two purines and two pyrimidines)
2. Adenine (A) and Guanine (G) are the purines.
3. Cytosine (C), Thymine (T), and uracil (U) are the pyrimidines.
4. In DNA molecule, Adenine (A), Guanine (G), Thymine (T), and Cytosine are present.
5. In RNA molecule, instead of Thymine (T), Uracil (U) is present.
6. Therefore, the nitrogenous base Thymine is unique for DNA, while uracil is unique for RNA.