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Cytosine’s complementary base in the DNA molecule is guanine. Cytidine is a structural subunit of ribonucleic acid that consists of cytosine and the sugar ribose. Cytidine triphosphate (CTP), an ester of cytidine and triphosphoric acid, is the substance utilized in the cells to introduce cytidylic acid units into ribonucleic acids.
Right: two complementary strands of DNA. Complementarity is achieved by distinct interactions between nucleobases: adenine, thymine (uracil in RNA), guanine and cytosine. Adenine and guanine are purines, while thymine, cytosine and uracil are pyrimidines. Purines are larger than pyrimidines.
In DNA, cytosine pairs with guanine through three hydrogen bonds, forming a stable base pair. The sequence of these base pairs along the DNA strand encodes genetic information. During DNA replication, the complementary base pairing ensures faithful copying of the genetic material.
Each molecule of DNA is a double helix formed from two complementary strands of nucleotides held together by hydrogen bonds between G-C and A-T base pairs. Duplication of the genetic information occurs by the use of one DNA strand as a template for formation of a complementary strand.
7 Μαρ 2024 · Complementary base pairing plays a crucial role in the structure and function of DNA. It refers to the specific hydrogen bonding between adenine (A) and thymine (T), as well as guanine (G) and cytosine (C). This pairing ensures the accurate replication and expression of genetic information.
5 Μαρ 2024 · Cytosine plays a crucial role in genetic coding and the transmission of genetic information. It is a pyrimidine base that forms complementary base pairs with guanine, helping to maintain the structure of the double helix in DNA.
15 Μαΐ 2022 · The rules of base pairing explain the phenomenon that whatever the amount of adenine (A) in the DNA of an organism, the amount of thymine (T) is the same (called Chargaff's rule). Similarly, whatever the amount of guanine (G), the amount of cytosine (C) is the same.
