Which base always pairs with thymine?

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Multiple Choice

Which base always pairs with thymine?

Explanation:
Base pairing in DNA follows complementary rules: adenine forms two hydrogen bonds with thymine, while cytosine pairs with guanine via three hydrogen bonds. This specific pairing keeps the DNA helix uniform in width and supports accurate replication. So, the base that always pairs with thymine is adenine. Note that in RNA, thymine is replaced by uracil, which pairs with adenine.

Base pairing in DNA follows complementary rules: adenine forms two hydrogen bonds with thymine, while cytosine pairs with guanine via three hydrogen bonds. This specific pairing keeps the DNA helix uniform in width and supports accurate replication. So, the base that always pairs with thymine is adenine. Note that in RNA, thymine is replaced by uracil, which pairs with adenine.

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