The base that pairs with Cytosine in DNA and RNA
The base that pairs with cytosine in both DNA and RNA is guanine
The base that pairs with cytosine in both DNA and RNA is guanine.
In DNA, cytosine always forms a base pair with guanine, while in RNA, cytosine can also base pair with guanine, depending on the sequence. These base pairs are formed through hydrogen bonding between specific nitrogenous bases.
The structure of cytosine includes a pyrimidine ring and an amino group (-NH2) attached to the carbon ring. Guanine, on the other hand, is a purine base, consisting of a pyrimidine ring fused to an imidazole ring.
In DNA, the cytosine-guanine base pair is formed by three hydrogen bonds. The amino group of cytosine can form hydrogen bonds with the carbonyl group on the imidazole ring of guanine. These hydrogen bonds stabilize the DNA double helix structure.
In RNA, cytosine can pair with guanine through two hydrogen bonds. The base pairing occurs in the same manner as in DNA, with the amino group of cytosine forming hydrogen bonds with the carbonyl group of guanine.
The specific base pairing between cytosine and guanine is important for maintaining the stability and integrity of the DNA and RNA molecules. These base pairs are vital for the accurate replication and transmission of genetic information during cell division and protein synthesis.
Understanding the base pairing rules is crucial in fields like genetics, molecular biology, and biochemistry, as it allows scientists to decipher the genetic code and study the structure and function of genes and proteins.
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