The phosphate group

The phosphate group - another on the two nucleotide chains...

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The  phosphate group  of DNA is derived from a molecule of  phosphoric acid.  The phosphate group connects the deoxyribose molecules to one  another in the nucleotide chain.   Deoxyribose  is a five-carbon carbohydrate.  The purine and pyrimidine bases are attached to the deoxyribose  molecules, and the purine and pyrimidine bases are opposite one 
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Unformatted text preview: another on the two nucleotide chains. Adenine is always opposite thymine and binds to thymine. Guanine is always opposite cytosine and binds to cytosine. Adenine and thymine are said to be complementary, as are guanine and cytosine This is known as the principle of complementary base pairing...
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This note was uploaded on 12/10/2011 for the course BIOLOGY bi 101 taught by Professor - during the Fall '10 term at Montgomery.

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