Examlex
In experimental research,while subjects in the ____ group received some special treatment in regard to the independent variable,subjects in the ____ group did not.
Derived Trait
A character that is present in a clade under consideration, but not in any of the clade’s ancestors.
Stabilizing Selection
A type of natural selection that favors intermediate variants by acting against extreme phenotypes, leading to a decrease in a population's genetic variance.
Clutch Size
The number of eggs laid or offspring produced by an animal, particularly birds, at one time or during one breeding session.
Directional Selection
is a type of natural selection that favors one extreme phenotype over others, causing a shift in allele frequency over time.
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