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DNA (deoxyribonucleic acid) is the genetic information found in the nuclei of most [[Organism|organisms]]. It is arranged into structures called chromosomes. The structure of DNA was identified as being a 'double-helix' by [[Watson|Watson]] and [[Crick|Crick]] in 1953. | DNA (deoxyribonucleic acid) is the genetic information found in the nuclei of most [[Organism|organisms]]. It is arranged into structures called [[Chromosome|chromosomes]]. The structure of DNA was identified as being a 'double-helix' by [[Watson|Watson]] and [[Crick|Crick]] in 1953. | ||
DNA is composed of 4 [[ | DNA is composed of 4 [[Base|bases]]; the purines: [[Adenine|Adenine]] (A) and [[Thymine|Thymine]] (T) and the pyrimidines: [[Guanine|Guanine]] (G) and [[Cytosine|Cytosine]] (C). These form complementary bases pairs of AT and GC. Contains a [[Phosphates|phosphate]] group connected to a [[Deoxyribose sugar|deoxyribose sugar]]. | ||
Revision as of 08:38, 19 November 2010
DNA (deoxyribonucleic acid) is the genetic information found in the nuclei of most organisms. It is arranged into structures called chromosomes. The structure of DNA was identified as being a 'double-helix' by Watson and Crick in 1953.
DNA is composed of 4 bases; the purines: Adenine (A) and Thymine (T) and the pyrimidines: Guanine (G) and Cytosine (C). These form complementary bases pairs of AT and GC. Contains a phosphate group connected to a deoxyribose sugar.