Guanine is one of the four nucleobases in the nucleic acids DNA and RNA. It pairs with cytosine (C) through three hydrogen bonds.
Think of guanine as a lock, and cytosine as its key. Just like how a specific key fits into a specific lock, guanine only pairs up with cytosine in DNA and RNA structures.
Adenine (A): This is another nucleobase found in DNA and RNA that pairs with thymine in DNA or uracil in RNA.
Nucleotide: The basic building block of nucleic acids such as DNA and RNA. A nucleotide consists of a sugar molecule attached to a phosphate group and a nitrogen-containing base (like guanine).
Base Pairing: The process by which nitrogenous bases form hydrogen bonds during the formation of molecules like DNA or RNA. For example, guanine forms three hydrogen bonds with cytosine.
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