Analysis of the spotted gar genome suggests absence of causative link between ancestral genome duplication and transposable element diversification in teleost fish.

Abstract excerpt

Teleost fish have been shown to contain many superfamilies of transposable elements (TEs) that are absent from most tetrapod genomes. Since theories predict an increase in TE activity following polyploidization, such diversity might be linked to the 3R whole-genome duplication that occurred approximately 300 million years ago before the teleost radiation. To test this hypothesis, we have analyzed the genome of...

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