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Recombinant hybrids retain heterozygosity at many loci: new insights into the genomics of reproductive isolation in Populus

Lindtke, Dorothea ; Buerkle, C. Alex ; Barbará, Thelma ; Heinze, Berthold ; Castiglione, Stefano ; Bartha, Denes ; Lexer, Christian

In: Molecular Ecology, 2012, p. -

The maintenance of species barriers in the face of gene flow is often thought to result from strong selection against intermediate genotypes, thereby preserving genetic differentiation. Most speciation genomic studies thus aim to identify exceptionally divergent loci between populations, but divergence will be affected by many processes other than reproductive isolation (RI) and speciation....