Difference between revisions of "DNA nucleotide"
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==Pyrimidine ribonucleotides== | ==Pyrimidine ribonucleotides== | ||
| + | ===Thymine=== | ||
| + | ===Cytosine=== | ||
| + | ===Uracil=== | ||
==Purine ribonucleotides== | ==Purine ribonucleotides== | ||
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.