Which base is paired with Thymine in DNA?

In DNA, Thymine pairs specifically with Adenine through two hydrogen bonds, forming what is known as a base pair. This pairing is a fundamental aspect of the double-helix structure of DNA, where complementary bases line up across the two strands. The strict base pairing rules—Adenine with Thymine and Guanine with Cytosine—are crucial for the stability and integrity of the genetic code during processes such as DNA replication and transcription. This complementary pairing ensures that the genetic information is accurately maintained and transmitted during cell division.

Other bases like Guanine, Cytosine, and Uracil do not pair with Thymine in DNA; Guanine pairs with Cytosine, while Uracil is found in RNA and pairs with Adenine instead of Thymine. This precise pairing mechanism is essential for the proper encoding of genetic information.