Difference between revisions of "DNA nucleotide"

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(Pyrimidine ribonucleotides)
(Purine ribonucleotides)
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==Purine ribonucleotides==
 
==Purine ribonucleotides==
 
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===Adenine===
 +
===Guanine===
  
 
== Sources ==
 
== Sources ==

Revision as of 20:56, February 4, 2009

A nucleotide is made of a phosphate, a molecule of ribose or 2'-deoxyribose, and another molecule called a nitrogenous base. The initial letters of the base names that spell out the genetic code. A, T, G, and C stand for the chemicals adenine, thymine, guanine, and cytosine, respectively. In base pairing, adenine always pairs with thymine, and guanine always pairs with cytosine.

Pyrimidine ribonucleotides

Thymine

Cytosine

Uracil

Purine ribonucleotides

Adenine

Guanine

Sources