3 years ago

2. Adenine and guanine are

Biology

1 answer:

Anettt [7]3 years ago

8 0

Answer:

single-ringed purines

Explanation:

Adenine and guanine are purine bases. They are structures composed of a 5-sided and 6-sided ring. Cytosine and thymine are pyrimidines which are structures composed of a single 6-sided ring. Adenine binds to thymine, while cytosine binds to guanine. This relationship is a form of complementary base pairing. These complementary bases are bonded together by hydrogen bonds.

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