Nucleic acid: Difference between revisions
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#Phosphate group. | #Phosphate group. | ||
The Nitrogenous group has 4 variants in DNA, these are: | The Nitrogenous group has 4 variants in DNA, these are: | ||
Adenine (A) | #Adenine (A) | ||
#Thymine (T) | |||
#Guanine (G) | |||
#Cytosine (C) | |||
RNA substitutes Uracil for Thymine. | RNA substitutes Uracil for Thymine. | ||
Adenine is complementary to Thymine and Guanine is complementary the Cytosine. Hydrogen bonds form between complementary bases of different nucleic acids. 2 hydrogen bonds form between A and T and 3 between G and C. | Adenine is complementary to Thymine and Guanine is complementary the Cytosine. Hydrogen bonds form between complementary bases of different nucleic acids. 2 hydrogen bonds form between A and T and 3 between G and C. | ||
Covalent phosphodiester bonds form between the phosphate groups of neighbouring nucleic acids <ref>http://biology.about.com/od/molecularbiology/a/nucleicacids.htm</ref>.<br> | Covalent phosphodiester bonds form between the phosphate groups of neighbouring nucleic acids <ref>http://biology.about.com/od/molecularbiology/a/nucleicacids.htm</ref>.<br> | ||
=== References === | === References === | ||
<references /> | <references /> | ||
<br> | <br> | ||
Revision as of 07:13, 2 December 2011
Nucleic acids allow the transfer of genetic information from generation to generation by means of DNA replication.
There are two types of nucleic acid:
- DNA
- RNA, (appears in several forms)
Nucleic acids have 3 main features:
- Nitrogenous base.
- 5 Carbon sugar.
- Phosphate group.
The Nitrogenous group has 4 variants in DNA, these are:
- Adenine (A)
- Thymine (T)
- Guanine (G)
- Cytosine (C)
RNA substitutes Uracil for Thymine.
Adenine is complementary to Thymine and Guanine is complementary the Cytosine. Hydrogen bonds form between complementary bases of different nucleic acids. 2 hydrogen bonds form between A and T and 3 between G and C.
Covalent phosphodiester bonds form between the phosphate groups of neighbouring nucleic acids [1].
References