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Tandem repeat polymorphism and heteroplasmy in the mitochondrial DNA control region of threespine stickleback (Gasterosteus aculeatus)
Mälardalen University, Department of Biology and Chemical Engineering.
Mälardalen University, Department of Biology and Chemical Engineering.
Mälardalen University, Department of Biology and Chemical Engineering.
2004 (English)In: Behaviour: An International Journal of Behavioural Biology, ISSN 0005-7959, Vol. 141, no 11-12, 1357-1369 p.Article in journal (Refereed) Published
Abstract [en]

Length polymorphism and heteroplasmy (multiple forms within a single individual) in the mitochondrial DNA (mtDNA) control region have been reported for several species of fish. In this report we demonstrate its existence in the threespine stickleback (Gasterosteus aculeatus). The repeat region, responsible for the length variation and heteroplasmy is located near the 5´ end of the control region and consists of slightly imperfect palindromic sequences. The repeat sequences vary in copy number from 1.5 to 16.5 and are capable of forming secondary structures. All individuals examined were heteroplasmic for 4 or more different copy number of repeats. Our results indicate that the repeats are a result of frequent competitive misalignment in the repeat region prior to replication and support the “illegitimate elongation model” as an explanation of the origin and maintenance of length heteroplasmy in the 5´ end of the control region.

Place, publisher, year, edition, pages
2004. Vol. 141, no 11-12, 1357-1369 p.
National Category
Genetics
Identifiers
URN: urn:nbn:se:mdh:diva-3060DOI: 10.1163/1568539042948114ISI: 000226829600005Scopus ID: 2-s2.0-13244261076OAI: oai:DiVA.org:mdh-3060DiVA: diva2:115724
Conference
4th International Conference on Stickleback Behaviour and Evolution, Strömstad, Sweden, Nov-Dec 2004
Available from: 2006-05-12 Created: 2006-05-12 Last updated: 2015-07-08Bibliographically approved

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CiteExportLink to record
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Citation style
  • apa
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  • Other style
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  • nn-NB
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