Chapter 16 Biology Vocab

Chapter 16 Bi Ology Vo
Created Apr 19, 2011
by hopebontempo
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Gene Pool
Combined genetic information of all the members of a particular populations.
Relative Frequency
Number of times an allele occurs in a gene pool compared with the number of times other alleles...
Sinlge-gene Trait
Trait controlled by a single gene.
Polygenic Trait
Trait controlled by two or more genes.
Directional Selection
Form of natural selection in which the entire curve moves.
Stabilizing Selection
Form of natural selection in which the center of the curve remains in its current position.
Disruptive Selection
Form of selection in which a single curve splits into two.
Genetic Drift
Random change in allele frequencies that occurs in small populations.
Founder Effect
Change in the allele frequencies as a result of the migration of a small subgroup of a population.
Hardy-Weinberg Principle
Principle that allele frequencies in a population will ramain constant unless one or more factors...
Genetic Equilibrium
Situation in which allele frequecies remain constant.
Speciation
Formation of new species.
Reproduction Isolation
Seperation of species or populations so that they cannot interbreed and produce fertile offspring.
Behavioral Isolation
Form of reproduction isolation in which two populations have different in courtship rituals...
Geographic Isolation
Form of reproduction isolation in which two populations are seperated physically by geographic...
Temporal Isolation
Form of reproduction isolation in which two populations reproduce at different times.

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