* Adenine (A) pairs with Thymine (T)

* Guanine (G) pairs with Cytosine (C)

This pairing is based on the specific hydrogen bonding interactions between the nitrogenous bases. Adenine and thymine form two hydrogen bonds, while guanine and cytosine form three hydrogen bonds.

This complementary pairing is essential for DNA replication and transcription, ensuring that the genetic information is accurately copied and passed on.