Which base pairs with Adenine in DNA?

In DNA, adenine pairs specifically with thymine through two hydrogen bonds. This complementary base pairing is essential for the structure of DNA, which consists of two strands running in opposite directions, forming the well-known double helix. The presence of thymine in DNA distinguishes it from RNA, where adenine pairs with uracil instead. This pairing mechanism is a critical aspect of DNA replication and transcription, ensuring that genetic information is accurately copied and transmitted in living organisms. The associativity of adenine with thymine contributes to the stability and integrity of the DNA molecule.