Disruptive selection is a mechanism of natural selection thatMultiple choice question.favors two or more extreme phenotypes in a population.favors the intermediate phenotype in a population.favors only one extreme phenotype in a population.is seldom seen in natural populations.

When the intermediate phenotype of a trait is being selected for and the extreme phenotypes are being selected against, the population is probably undergoingMultiple choice question.disruptive selection.directional selection.sexual selection.stabilizing selection.

The mode of natural selection in which two or more extreme phenotypes are fitter than the intermediate phenotype isMultiple Choicedirectional selection.stabilizing selection.disruptive selection.artificial selection.uniformitarianism.

A change in allele frequency following a dramatic reduction in the size of a population is calledA.disruptive selection.B. bottleneck effect.C.stabilizing selectionD.genetic drift.

Natural selection occurs whenMultiple Choicewhen a small number of individuals of a population break away and form a new population.a factor in the environment alters the genetic information in DNA of all members of a species.only when nonrandom mating occurs.a new genetic variation occurs that allows individuals to have a reproductive and survival advantage.

Directional, disruptive, and stabilizing are all types of ______, in which certain phenotypes are favored over others.Multiple choice question.migrationnatural selectionmutationgenetic drift