Multiple choice What are the names of purine and pyrimidine bases? Purines-Adenine and Cytosine; Pyrimidines-Uracil and thymine Purines-Thymine and Cytosine; Pyrimidines-Uracil and Adenine Purines-Uracil and Cytosine; Pyrimidines-Thymine Purines-Guanine and Cytosine; Pyrimidines-Uracil and Thymine Purines-Adenine and Guanine; Pyrimidines-Cytosine,Uracil and Thymine Reveal answer Fill a bubble to check yourself E Correct answer Explanation The purine bases are Adenine and Guanine while Cytosine, Uracil and Thymine are pyrimidines. Hence, this option is the correct answer.