Phospho-di-ester linkages.
Hydrogen Bond
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If you are talking about the base pairing between the two strands of double stranded DNA, then it is H-bond.
A hydrogen bond.
The carbohydrates units are linked together through an oxygen bridge between two cyclic structues commonly known as Glycosidic linkage (of course it is a covalent bond).
In producing a strand of DNA the nucleotides combine to form phosphodiester bonds.
Hydrogen Bond
i think it is a triple bond or it could be a double bond
In producing a strand of DNA the nucleotides combine to form phosphodiester bonds.
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The Ligase connects nucleotides together during DNA replication.
Guanine
If you are talking about the base pairing between the two strands of double stranded DNA, then it is H-bond.
At, GC
RNA polymerase
the bond is called a hydrogen bond:)
The connection between nucleotides is between the sugar of the first nucleotide and the phosphate of the second. These are covalent bonds yielding a covalently attached sugar-phosphate backbone.