Which base pairs with Cytosine in DNA?

Cytosine pairs with Guanine in DNA through the formation of three hydrogen bonds, which helps to stabilize the DNA double helix structure. This base pairing is a fundamental aspect of the DNA structure, adhering to the rules of complementary base pairing established by Chargaff. In this context, Adenine pairs with Thymine, and in RNA, Uracil replaces Thymine but does not interact with Cytosine in DNA. The pairing of Cytosine with Guanine ensures accurate DNA replication and the maintenance of genetic information.