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Chp. 16, Section 2

Vocab for 16.2 Biology

TermDefinition
Directional selection A type of natural selection in which the most extreme form of a trait is favored and becomes more common
Disruptive selection A type of natural selection in which two extreme forms of a trait are selected
Emigration The movement of an individual or group out of an area
Gene flow The movement of genes into or out of a population due to interbreeding
Genetic drift The random change in an allele frequency in a population
Immigration The movement of an individual or group into an area
Sexual selection An evolutionary mechanism by which traits that increase the ability of individuals to attract or acquire mates appear with increasing frequency in a population; selection in which a mate is chosen on the basis of a particular trait or traits
Stabilizing selection A type of natural selection in which the average form of a trait is favored and becomes more common
Created by: CareGraceR
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