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Heterosis, hybrid vigor, or outbreeding enhancement is the improved or increased function of any biological quality in a hybrid offspring. An offspring is heterotic if its traits are enhanced as a result of mixing the genetic contributions of its parents.
Heterozygote advantage is a major underlying mechanism for heterosis, or "hybrid vigor", which is the improved or increased function of any biological quality in a hybrid offspring.
Hybrid vigor in the first generation can, in some circumstances, be strong enough to mask the effects of outbreeding depression. An example of this is that plant breeders will make F 1 hybrids from purebred strains, which will improve the uniformity and vigor of the offspring; however, the F 2 generation are not used for further breeding ...
This is in accord with Charles Darwin, [42] who concluded that the adaptive advantage of sex is hybrid vigor; or as he put it, "the offspring of two individuals, especially if their progenitors have been subjected to very different conditions, have a great advantage in height, weight, constitutional vigor and fertility over the self fertilised ...
hybrid inviability hybrid speciation hybrid sterility hybrid swarm hybrid zone A geographic area in which the ranges of two interbreeding species or populations overlap, allowing them to cross-fertilize and generate hybrid offspring. The formation of a hybrid zone is one of the four outcomes of secondary contact between divergent genetic lineages.
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Broccolini was developed in Japan over the course of eight years as a hybrid designed for a milder flavor and better growth in warmer climates. It debuted in the United States in 1996, with ...
Hybrid talk, the rhetoric of hybridity, is fundamentally associated with the emergence of post-colonial discourse and its critiques of cultural imperialism. It is the second stage in the history of hybridity, characterized by literature and theory that study the effects of mixture (hybridity) upon identity and culture.