Cytosine (/ˈstəˌsn, -ˌzn, -ˌsɪn/; C) is one of the four main bases found in DNA and RNA, along with adenine, guanine, and thymine (uracil in RNA). It is a pyrimidine derivative, with a heterocyclic aromatic ring and two substituents attached (an amine group at position 4 and a keto group at position 2). The nucleoside of cytosine is cytidine. In Watson-Crick base pairing, it forms three hydrogen bonds with guanine.
Mediander uses proprietary software that curates millions of interconnected topics to produce the Mediander Topics search results. As with any algorithmic search, anomalous results may occur. If you notice such an anomaly, or have any comments or suggestions, please contact us.