Guanine

Definition

Guanine is one of the four main nucleobases found in the nucleic acids DNA and RNA. It pairs with cytosine.

Related terms

Adenine:

This is another nucleobase found in DNA and RNA that pairs with thymine in DNA and uracil in RNA.

Nucleotide:

This is the basic building block of DNA and RNA consisting of a sugar, phosphate group, and a nitrogenous base (like guanine).

Base Pairing: This refers to the phenomenon where specific nitrogenous bases (like guanine and cytosine) bind together to form the structure of DNA or RNA.