Adenine and Cytosine are both nitrogenous bases. What structural feature distinguishes the group Adenine belongs to from the group containing Cytosine?
Q1. Adenine and Cytosine are both nitrogenous bases. What structural feature distinguishes the group Adenine belongs to from the group containing Cytosine?
Answer: Double ring structure
Explanation: Purines (Adenine/Guanine) have a double-ring structure, while Pyrimidines (Cytosine/Thymine/Uracil) consist of a single six-membered ring.