Examlex
One factor that can lead to an environmental surprise is a discontinuity or abrupt change in a previously stable system when some ___________________________________ is crossed.
Stabilizing
A type of natural selection that favors the average individuals in a population, thereby maintaining the population's genetic variation.
Directional
In evolutionary biology, a type of natural selection that favors one extreme phenotype over others, causing a shift in the population's phenotypic distribution over time.
Additive Alleles
Alleles that contribute to the phenotype in a way that the effects of individual alleles add up to produce the overall phenotype.
Epistatic Alleles
Genetic alleles that mask the effect of alleles at other loci in determining phenotypic expression.
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