Cytosine From : PY Blain
Adenine is complimentary to thymine. Cytosine is complimentary to guanine.
C always has to bond with G because of base pairing rules. Only between Cytosine and Guanine are there opportunities to form hydrogen bonds. This is why Adenine or Thymine cannot bond with Guanine and Cytosine.
Thymine will always bond with adenine, and guanine will always bind with cytosine.
Guanine bonds with cytosine in DNA.
Guanine and cytosine base pair (triple bond), and adenine and uracil base pair (double bond).
Cytosine From : PY Blain
Adenine is complimentary to thymine. Cytosine is complimentary to guanine.
C always has to bond with G because of base pairing rules. Only between Cytosine and Guanine are there opportunities to form hydrogen bonds. This is why Adenine or Thymine cannot bond with Guanine and Cytosine.
Thymine will always bond with adenine, and guanine will always bind with cytosine.
Cytosine, a pyrimidine (sugar) base, pairs with Guanine, a purine (nitrogen) base.
Cytosine is the complement of guanine. no surprise
In RNA, the nitrogenous bases change and there is no longer Thymine, instead Uracil replaces Thymine but it bonds with the same base pair ( Adenine) as it would in DNA. In other words DNA base pairs are : Adenine- Thymine, Guanine-Cytosine. RNA base pairs are : Adenine- Uracil, Guanine-Cytosine.
Guanine bonds with cytosine in DNA.
Guanine
Thymine can only pair with adenine and guanine can only pair with cytosine due to the base-pairing rule.
In DNA, Adenine will always bond with its base pair Thymine. The base Guanine will only bond with its pair Cytosine. Commonly, these complentations can be confused with that of RNA (Ribonucleic acid) where the nitrogenous base Uracil replaces Thymine to pair with Adenine.