BIO question

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Kami

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I have always been thinking for so many years and now I thought that I put it in this forum and see if I can clearify this. DNA bases pair with each other DNA is held together by hydrogen bonds that is A pairs with T and G pairs with C. In other words purines pair with pyrimidines. So what about phosphodiester bonds? How would phosphodiester bonds be involved in the linking of the DNA? Thanks for the replies in advance.
 
Here is a diagram which shows the phosphodiester bond linkage between purines and pyrmidines.

As you can see, it attaches the nucleotide adjacent to it. In DNA and RNA, the phosphodiester bond is the linkage between the 3' carbon atom and the 5' Carbon of the ribose sugar.


Basically, Hydrogen bonds are between the nucleotides between and syn (parent) and anti (complement) strand while phospho-diester bonds are between only syn strand or only anti strand.
 

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