Exons

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[[DNA|DNA]]&nbsp;is made up of different units called [[Nucleotides|nucleotides]]. There are a variety of four different nucleotides that make up the Polymer that is DNA<ref>Alberts .B. (2008) Molecular Biology of the Cell, 5th Edition, New York: Garland Science</ref>. DNA consists of two different regions, one being Exons and the other [[Introns|Introns]]. The regoins of exons in the DNA consist of fewer nuclotides than the regoins of introns and are the coding regions for [[Proteins|proteins]]<ref>Gilbert W, 1978 "Why genes in pieces?", Nature, 271 (5645): 501</ref>. It is also now thought that enhancer sequences for regulation of gene [[Transcription|transcription]] is not just found in Introns but now in Exons as well<ref>Purnel;, B. Exons. Exons Encode Enhancers. Science 2012. Vol:336(6079), pp.277-277</ref>.<br>  
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[[DNA|DNA]] is made up of different units called [[Nucleotides|nucleotides]]. There are a variety of four different nucleotides that make up the [[Polymer|polymer]] that is DNA<ref>Alberts .B. (2008) Molecular Biology of the Cell, 5th Edition, New York: Garland Science</ref>. DNA consists of two different regions, one being [[Exons|exons]] and the other i[[Introns|ntrons]]. The regions of exons in the DNA consist of fewer nucleotides than the regions of introns and are the regions that code for [[Proteins|proteins]]<ref>Gilbert W, 1978 "Why genes in pieces?", Nature, 271 (5645): 501</ref>. It is also now thought that enhancer sequences for regulation of gene [[Transcription|transcription]] is not just found in introns but also exons<ref>Purnel;, B. Exons. Exons Encode Enhancers. Science 2012. Vol:336(6079), pp.277-277</ref>. Exons are the coding regions of a gene and are separated by regions of introns; they are copied during transcription (along with introns) to produce pre-mRNA<ref>Editors. Exon - Definition, Structure and Function. https://biologydictionary.net/exon/.</ref>.
  
 
=== References  ===
 
=== References  ===
  
 
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Latest revision as of 09:29, 19 November 2018

DNA is made up of different units called nucleotides. There are a variety of four different nucleotides that make up the polymer that is DNA[1]. DNA consists of two different regions, one being exons and the other introns. The regions of exons in the DNA consist of fewer nucleotides than the regions of introns and are the regions that code for proteins[2]. It is also now thought that enhancer sequences for regulation of gene transcription is not just found in introns but also exons[3]. Exons are the coding regions of a gene and are separated by regions of introns; they are copied during transcription (along with introns) to produce pre-mRNA[4].

References

  1. Alberts .B. (2008) Molecular Biology of the Cell, 5th Edition, New York: Garland Science
  2. Gilbert W, 1978 "Why genes in pieces?", Nature, 271 (5645): 501
  3. Purnel;, B. Exons. Exons Encode Enhancers. Science 2012. Vol:336(6079), pp.277-277
  4. Editors. Exon - Definition, Structure and Function. https://biologydictionary.net/exon/.
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