Which base pairs with thymine in DNA?

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Multiple Choice

Which base pairs with thymine in DNA?

Explanation:
Base pairing in DNA follows a rule that a purine pairs with a pyrimidine to keep the helix width constant. Thymine pairs with adenine, forming two hydrogen bonds that stabilize the A–T connection. Guanine pairs with cytosine, not with thymine, through three hydrogen bonds. So thymine’s partner in DNA is adenine.

Base pairing in DNA follows a rule that a purine pairs with a pyrimidine to keep the helix width constant. Thymine pairs with adenine, forming two hydrogen bonds that stabilize the A–T connection. Guanine pairs with cytosine, not with thymine, through three hydrogen bonds. So thymine’s partner in DNA is adenine.

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