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Genetic hybridization is the process of interbreeding individuals from genetically distinct populations to produce a hybrid. A genetic hybrid would therefore carry two different alleles of the same gene.
Gene flow between wild and farmed salmon is known to be widespread. Here, the authors show that introgression with domestic conspecifics has demographic consequences for wild Atlantic salmon by altering fitness-related life history traits.
High-throughput population genomics reveals how the evolution of chromosome arrangement and sequence divergence followed by secondary contact upon glacier retreat initiates homoploid hybrid speciation in natural populations of the budding yeast Saccharomyces paradoxus.