noun🔗ShareCitosinaA heterocyclic base, 4-aminopyrimidin-2(1H)-one, which pairs with guanine in DNA and RNA (by means of three hydrogen bonds)."In the DNA sequence, cytosine always pairs with guanine, like two puzzle pieces fitting together. "En la secuencia de ADN, la citosina siempre se empareja con la guanina, como dos piezas de rompecabezas que encajan.chemistrybiologybiochemistrycompoundsubstanceChat with AIVocabulary GamePractice Reading
