Facultative heterochromatin: Difference between revisions
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Facultative [[Heterochromatin|heterochromatin]] is formed during development and is often the condensation of regions which contain [[Coding genes|coding genes]]. An example of facultative heterochromatin is the formation of [[Barr bodies|Barr bodies]] (inactivated [[X chromosomes|X chromosomes]]), which occurs during [[Cell division|cell division]]<ref>BioMed Central, Saksouk N, Simboeck E, Déjardin J, Constitutive heterochromatin formation and transcription in mammals. 15th January 2015 [cited:03/12/2017]; Available from: https://epigeneticsandchromatin.biomedcentral.com/articles/10.1186/1756-8935-8-3</ref>. The silencing of genes in facultative heterochromatin may be reversed, but if the [[phenotype|phenotype]] of the organism is stable then this process is unlikely<ref name="Epigenetics by L. Armstrong">Armstrong L, Epigenetics. 1st Edition, New York: Garland Science. 2014</ref>. | |||
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Latest revision as of 20:16, 4 December 2017
Facultative heterochromatin is formed during development and is often the condensation of regions which contain coding genes. An example of facultative heterochromatin is the formation of Barr bodies (inactivated X chromosomes), which occurs during cell division[1]. The silencing of genes in facultative heterochromatin may be reversed, but if the phenotype of the organism is stable then this process is unlikely[2].
References:
- ↑ BioMed Central, Saksouk N, Simboeck E, Déjardin J, Constitutive heterochromatin formation and transcription in mammals. 15th January 2015 [cited:03/12/2017]; Available from: https://epigeneticsandchromatin.biomedcentral.com/articles/10.1186/1756-8935-8-3
- ↑ Armstrong L, Epigenetics. 1st Edition, New York: Garland Science. 2014