See Also

Double helix

In geometry Geometry

Geometry arose as the field of knowledge dealing with spatial relationships.... 

 a double helix typically consists of two congruent helices Helix

A helix, from the Greek [i] word ????a?/????, is a twisted shape like a spring, screw [i] ... 

 with the same axis, differing by a translation along the axis, which may or may not be half-way. In modern pop culture, the double helix shape is strongly associated with DNA DNA

Deoxyribonucleic acid is a nucleic acid [i] that contains the genetic [i] instructions for t ... 

. That the double helix is the structure of DNA was first published by James D. Watson James D. Watson

James Dewey Watson KBE [i] ForMemRS [i] is an American scien ... 

 and Francis Crick Francis Crick

[i] [[ was an [[England|English]] [i] [[physics|physicist]] [i], [[molecular biology|molecular biologist]] [i]... 

 in 1953. They constructed a molecular model of DNA in which there were two complementary, antiparallel  strands of the bases guanine Guanine

Guanine is one of the five main nucleobase [i]s found in the nucleic acid [i]s DNA [i] and RNA [i]; the ... 

, adenine Adenine

Adenine is one of the two purine [i] nucleobase [i]s used in forming nucleotide [i]s of the nucleic acid ... 

, thymine Thymine

... 

, and cytosine Cytosine

Cytosine is one of the 5 main nucleobase [i]s used in storing and transporting genetic [i] info ... 

, covalently Covalent bond

Covalent bonding is an intramolecular form of chemical bond [i]ing characterized by the sharing of one o ... 

 linked through phosphodiester bonds Phosphodiester bond

A phosphodiester bond is a group of strong covalent bonds between the phosphorus atom [i] in ... 

.

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Timeline

1953   Francis Crick Francis Crick

[i] [[ was an [[England|English]] [i] [[physics|physicist]] [i], [[molecular biology|molecular biologist]] [i]... 

 and James D. Watson James D. Watson

James Dewey Watson KBE [i] ForMemRS [i] is an American scien ... 

 publish their description of the double helix structure of DNA DNA

Deoxyribonucleic acid is a nucleic acid [i] that contains the genetic [i] instructions for t ... 

.(::Watson, J. D. and Crick, F. H. C. (1953). . ''Nature'' '''171''', 737-738.) .]]



Encyclopedia



In geometry Geometry

Geometry arose as the field of knowledge dealing with spatial relationships.... 

 a double helix typically consists of two congruent helices Helix

A helix, from the Greek [i] word ????a?/????, is a twisted shape like a spring, screw [i] ... 

 with the same axis, differing by a translation along the axis, which may or may not be half-way.

In modern pop culture, the double helix shape is strongly associated with DNA DNA

Deoxyribonucleic acid is a nucleic acid [i] that contains the genetic [i] instructions for t... 

. That the double helix is the structure of DNA was first published by James D. Watson James D. Watson

James Dewey Watson KBE [i] ForMemRS [i] is an American scien ... 

 and Francis Crick Francis Crick

[i] [[ was an [[England|English]] [i] [[physics|physicist]] [i], [[molecular biology|molecular biologist]] [i]... 

 in 1953. They constructed a molecular model of DNA in which there were two complementary, antiparallel  strands of the bases guanine Guanine

Guanine is one of the five main nucleobase [i]s found in the nucleic acid [i]s DNA [i] and RNA [i]; the ... 

, adenine Adenine

Adenine is one of the two purine [i] nucleobase [i]s used in forming nucleotide [i]s of the nucleic acid ... 

, thymine Thymine

... 

, and cytosine Cytosine

Cytosine is one of the 5 main nucleobase [i]s used in storing and transporting genetic [i] info ... 

, covalently Covalent bond

Covalent bonding is an intramolecular form of chemical bond [i]ing characterized by the sharing of one o ... 

 linked through phosphodiester bonds Phosphodiester bond

A phosphodiester bond is a group of strong covalent bonds between the phosphorus atom [i] in ... 

. The four nitrogen-containing bases found in DNA are divided into two groups: purines and pyrimidines. Two-ringed bases are purines. One-ringed bases are called pyrimidines. Adenine and guanine are purines, whilst thymine and cytosine are pyrimidines. Each strand forms a helix, and the two helices are held together through hydrogen bonds Hydrogen bond

In chemistry [i], a hydrogen bond is a type of attractive intermolecular force [i] that exists between t ... 

, ionic forces, hydrophobic interactions, and van der Waals forces Van der Waals force

In chemistry [i], the term van der Waals force refers to a particular class of intermolecular forces [i]... 

 forming a double helix.

See also

  • Nucleic acid Nucleic acid

    A nucleic acid is a complex, high-molecular-weight biochemical [i] macromolecule [i] compos ... 

  • Molecular structure of Nucleic Acids Molecular structure of Nucleic Acids

    The Molecular structure of Nucleic Acids: A Structure for Deoxyribose Nucleic Acid was an article publis... 







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