Definitions
from Wiktionary, Creative Commons Attribution/Share-Alike License.
- noun genetics A
fragment ofDNA inserted into achromosome followingreverse transcription fromRNA
Etymologies
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Examples
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Pegasoferae, an unexpected mammalian clade revealed by tracking ancient retroposon insertions.
Archive 2006-08-01 Darren Naish 2006
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Pegasoferae, an unexpected mammalian clade revealed by tracking ancient retroposon insertions.
We flightless primates Darren Naish 2006
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Hedvicakova P, Mohrmann M, Tesarova M, Krepelova A, et al. (2007) A novel insertion of a rearranged L1 element in exon 44 of the dystrophyn gene: further evidence for possible bias in retroposon integration.
PLoS ONE Alerts: New Articles Mariana M. Hecht et al. 2010
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Nilsson compared the retroposon lineups of the South American opossum, Australian tammar wallaby (a kangaroo), and 20 other species, including the common wombat, wallaroo, and marsupial mole.
News 2010
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Hedvicakova P, Mohrmann M, Tesarova M, Krepelova A, et al. (2007) A novel insertion of a rearranged L1 element in exon 44 of the dystrophyn gene: further evidence for possible bias in retroposon integration.
PLoS ONE Alerts: New Articles Mariana M. Hecht et al. 2010
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The occurrence of minicircles linked to LINE sequences via AC-rich microhomology-mediated recombination may augment endogenous levels of recombination, thus explaining the active generation of mosaic sequences and minicircle hitchhiking along with their associated retroposon, as seen in germ-line cells of Chagas patients and their progeny.
PLoS ONE Alerts: New Articles Mariana M. Hecht et al. 2010
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Sometimes one retroposon is inserted in the middle of another, again giving vital clues as to the sequence of events in a family's evolution.
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The South American marsupials had undergone fewer retroposon copy-and-paste incidents, which suggests that they form the older branches of the tree.
News 2010
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If two species carry the same retroposon but a third does not, that indicates that the first two are more closely related to each other than they are to the third.
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The retroposon data also clearly divided Australian and South American marsupials into distinct groups-a hint that the animals enjoyed little contact as they evolved.
News 2010
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