Cytosine.
In a DNA molecule cytosine always pairs with guanine, the same is true for an RNA molecule.
guanine
A purine will always pair with a pyrimidine. Examples of purines are adenine (pairs with thymine or uracil) and guanine (pairs with cytosine). Examples of pyrimidines are thymine (pairs with adenine), uracil (pairs with adenine), and cytosine (pairs with guanine).
Adenine always pairs with thymine Cytosine always pairs with guanine.
Adenine always pairs with thymine in a DNAmolecule.
Guanine
In DNA adenine pairs with thymine. In RNA adenine pairs with uracil.
cytosine A - T G - C
Cytosine, a pyrimidine (sugar) base, pairs with Guanine, a purine (nitrogen) base.
In nucleic acids, the base that pairs with guanine is cytosine.
The nitrogenous base that always pairs with guanine is cytosine. In DNA, guanine pairs with cytosine through three hydrogen bonds, ensuring the stability of the DNA structure. This complementary base pairing is essential for accurate DNA replication and the transmission of genetic information.
Adenine pairs with thymine and guanine pairs with cytosine