Which base pairs with Guanine?

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Multiple Choice

Which base pairs with Guanine?

Explanation:
Guanine pairs with Cytosine in DNA. This pairing happens because a purine (G) must team up with a pyrimidine (C) to keep the DNA double helix width consistent, and they form three hydrogen bonds, giving the pair extra stability. The other bases have their own partners: Adenine pairs with Thymine, not with Guanine, and Guanine would not pair with itself. So Cytosine is the correct partner for Guanine.

Guanine pairs with Cytosine in DNA. This pairing happens because a purine (G) must team up with a pyrimidine (C) to keep the DNA double helix width consistent, and they form three hydrogen bonds, giving the pair extra stability. The other bases have their own partners: Adenine pairs with Thymine, not with Guanine, and Guanine would not pair with itself. So Cytosine is the correct partner for Guanine.

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