In DNA, there are four types of nucleotides. These are Guanine, Cytosine, Thymine and Adenine. Guanine and Adenine are purines whereas Cytosine and Thymine are pyrimidines. Adenine will always bond with thymine in DNA. Therefore, guanine and cytosine bond together. These comnplementary base pairing allows the DNA to be replicated and is also used in protein synthesis.
Pyrimidines (C, U, T) bond with Purines (A, G) via Hydrogen bondings. A and T are held together by two H-bonds. G and C are bonded together by three H-bonds.
Phospho-di-ester linkages.
Gangnam Style
If you are talking about the base pairing between the two strands of double stranded DNA, then it is H-bond.
A DNA molecule is composed of long chains of DNA nucleotides.
Nucleotides are smaller subunits that make up nucleic acids.
Guanine
At, GC
In producing a strand of DNA the nucleotides combine to form phosphodiester bonds.
the bond is called a hydrogen bond:)
It doesn't contain an OHO bond so no other nucleotides can attach to it.
Phospho-di-ester linkages.
So they could bond together
Purines bond to pyrimidines
Gangnam Style
so they cant disolve
If you are talking about the base pairing between the two strands of double stranded DNA, then it is H-bond.
Phophodiester bonds are the one that connect the nucleotides next to each other on the same strand. Weak hydrogen bonds join the two complementary nucleotides and thus the two strands of the DNA together.