Relevant Competitive Tests:
The purine ring contains:
A. Adenine and Cytosine
B. Guanine and Thymine
C. Adenine and GuanineCorrect Answer
D. Uracil and Cytosine
Correct Option: C. Adenine and Guanine
Detailed Explanation & Reference:
Explanation: Purine bases in DNA are adenine and guanine, which are double-ringed structures.
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