Title |
Impact of ploidy level on the distribution of Pokey element insertions in the Daphnia pulex complex
|
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Published in |
Mobile DNA, January 2014
|
DOI | 10.1186/1759-8753-5-1 |
Pubmed ID | |
Authors |
Roland Vergilino, Shannon HC Eagle, Teresa J Crease, France Dufresne |
Abstract |
Transposable elements (TEs) play a major role in genome evolution. Their capacity to move and/or multiply in the genome of their host may have profound impacts on phenotypes and dramatic consequences on genome structure. The population dynamics and distribution of TEs are influenced by their mode of transposition, the availability of niches in host genomes, and host population dynamics. Theories predict an increase in the number of TE insertions following hybridization or polyploidization. Evolution of TEs in hybrids and polyploids has mostly been studied in plants; few studies have examined the impacts of hybridization and/or polyploidization on TEs in animals. Hybrids and polyploids have arisen multiple times in the Daphnia pulex complex and are thought to reproduce by obligate parthenogenesis. Our study examines the effects of ploidy level on polymorphism and number of Pokey element insertions in diploid and polyploid hybrid isolates from the Daphnia pulex complex. |
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