The following diagrams represent the nitrogenous base of nucleic acid molecules. Identify the correct combination.
Statement 1: The four nitrogen bases in a DNA molecule are guanine, thymine adenine, cytosine.
Statement 2: Where adenine and thymine are purines and guanine and cytosine are pyrimidines.
Which of the following are purine bases? (a) Guanine (b) Adenine (c) Thymine (d) Uracil