noun🔗ShareGuanineA substance first obtained from guano; it is a nucleic base and pairs with cytosine in DNA and RNA (by means of three hydrogen bonds)."The scientist studied the guanine content in the DNA samples from the ancient fossils. "Le scientifique a étudié la teneur en guanine dans les échantillons d'ADN provenant des fossiles anciens.biochemistrybiologychemistrysubstancecompoundChat with AIVocabulary GamePractice Reading