Additive genetic effects
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Additive genetic effects consist of the effects of two or more alleles of different loci combined in such a way that the sum of their effects in unison is equal to the sum of their effects individually.[1] Such phenomena are only possible when the alles involved do not interact with one another in such a way that would modify, hinder, or amplify the effects of any one gene involved. An additive genetic effect is a form of quantitative inheritance as the effects of the combined genes can be simply added together. Additive genetic effects are different from cumulative gene action because in the last, the effects of the genes combined create an action of increased intensity.
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