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Adaptive evolution and segregating load contribute to the genomic landscape of divergence in two tree species connected by episodic gene flow

Christe, Camille ; Stölting, Kai N. ; Paris, Margot ; Fraїsse, Christelle ; Bierne, Nicolas ; Lexer, Christian

In: Molecular Ecology, 2017, vol. 26, no. 1, p. 59–76

Speciation often involves repeated episodes of genetic contact between divergent populations before reproductive isolation (RI) is complete. Whole-genome sequencing (WGS) holds great promise for unravelling the genomic bases of speciation. We have studied two ecologically divergent, hybridizing species of the ‘model tree’ genus Populus (poplars, aspens, cottonwoods), Populus alba and P....