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This is a unidirectional process based on the release of a specific compound by one organism that has a negative effect on another. A classic example of amensalism is the microbial production of antibiotics that can inhibit or kill other, susceptible microorganisms. A clear case of amensalism is where sheep or cattle trample grass.
The pygmy mammoth is an example of insular dwarfism, a case of Foster's rule, its unusually small body size an adaptation to the limited resources of its island home.. A biological rule or biological law is a generalized law, principle, or rule of thumb formulated to describe patterns observed in living organisms.
Causes and effects. Causes and effects from a common cause. One famous example of the importance of this is the Duhem–Quine thesis, which demonstrates that it is impossible to test a hypothesis in isolation, because an empirical test of the hypothesis requires one or more background assumptions. One way to solve this issue is to employ ...
In persuasive communication, the order of the information's presentation influences opinion formation. The law of primacy in persuasion, otherwise known as a primacy effect, as postulated by Frederick Hansen Lund in 1925 holds that the side of an issue presented first will have greater effectiveness in persuasion than the side presented subsequently. [1]
Direct applicability is often confused with the doctrine of direct effect. This confusion is perhaps explained by reference to the treaty provision governing regulations which provides that they, and only they, have direct applicability within the member states. The early jurisprudence of the ECJ suggested that 'direct effect' was a consequence ...
Gene–environment interaction (or genotype–environment interaction or G×E) is when two different genotypes respond to environmental variation in different ways. A norm of reaction is a graph that shows the relationship between genes and environmental factors when phenotypic differences are continuous. [1]
Fisher's principle is an early example of a model in which genes for greater production of either sex become equalized in the population, because each sex supplies exactly half the genes of all future generations.
In these examples, the source of selection on a trait coevolves with the trait itself, therefore causation is reciprocal and developmental processes potentially become relevant to evolutionary accounts. For instance, a peacock’s tail evolves through mating preferences in peahens, and those preferences coevolve with the male trait.