In DNA, which base pairs with thymine?

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Multiple Choice

In DNA, which base pairs with thymine?

Explanation:
Base pairing in DNA is highly specific: adenine forms two hydrogen bonds with thymine, so adenine pairs with thymine to create the stable A–T connection that helps hold the two DNA strands together and allows faithful copying during replication. Thymine is characteristic of DNA; in RNA, uracil replaces thymine and pairs with adenine, but in DNA the partner for thymine is adenine. Guanine pairs with cytosine instead, using three hydrogen bonds, which explains why that pair is separate from the thymine–adenine pairing. So the base that pairs with thymine is adenine.

Base pairing in DNA is highly specific: adenine forms two hydrogen bonds with thymine, so adenine pairs with thymine to create the stable A–T connection that helps hold the two DNA strands together and allows faithful copying during replication. Thymine is characteristic of DNA; in RNA, uracil replaces thymine and pairs with adenine, but in DNA the partner for thymine is adenine. Guanine pairs with cytosine instead, using three hydrogen bonds, which explains why that pair is separate from the thymine–adenine pairing. So the base that pairs with thymine is adenine.

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