noun
- a purine base that is one of the four chemical bases in DNA and RNA, pairing with cytosine
Usage: biochemistry
Examples
- Guanine is one of the four nucleotide bases found in DNA.
- The double helix structure depends on guanine pairing with cytosine.
- Scientists studied the guanine content in the genetic sample.
- Guanine and adenine are both purine bases.
- The mutation affected the guanine sequence in the gene.
- Researchers measured guanine levels in the RNA strand.