A-T pairing

A-T pairing refers to how adenine (A) and thymine (T)) bases connect within DNA. They form hydrogen bonds that hold the two strands of DNA together in a specific way. This pairing is complementary, meaning each A always pairs with a T, and vice versa. This specific pairing is essential for DNA's structure and function, allowing accurate copying of genetic information during cell division. The A-T pair forms two hydrogen bonds, making it slightly weaker than other base pairs like G-C, which have three bonds. This selective pairing ensures the stability and fidelity of genetic information.