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Dispersal, whether in the form of a dandelion seed drifting on the breeze, or a salmon migrating upstream to breed in a nonnatal stream, transports genes between locations. At these locations, local adaptation modifies the gene frequencies so their carriers are better suited to particular conditions, be those of newly disturbed soil or a quiet river pool. Both dispersal and local adaptation are major...
Character displacement, which arises when species diverge in sympatry to decrease competition for resources or reproductive interference, has been observed in a wide variety of plants and animals. A classic example of reproductive character displacement, presumed to be caused by reinforcing selection, is flower‐color variation in the native Texas wildflower Phlox drummondii. Here, we use population...
Recombination is a powerful policing mechanism to control intragenomic cheats. The “parliament of the genes” can often rapidly block driving genes from cheating during meiosis. But what if the genome parliament is reduced to only two members, or supergenes? Using a series of simple game‐theoretic models inspired by the peculiar genetics of Oenothera sp., we illustrate that a two supergene genome (α...
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