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16 Cards in this Set
- Front
- Back
gene pool |
Combined genetic info of all members of a particular population
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relative frequency |
Number of times allele occurs in a gene pool compared with the # of times other alleles occur
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single gene trait |
Traits controled by a single gene that has 2 alleles
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polygenic trait |
traits controlled by 2 or more alleles |
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directional selection |
Form of natural selection in which the entire curve moves
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stabilizing selection |
Form of natural selection by which the center of a curve remains in its current position
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disruptive selection |
Form of natural selection in which the entire curve splits in two
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genetic drift |
Random change in allele frequencies that occurs in small populations
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founder effect |
Change in allele frequencies as a result of the migration of a small group of a population
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hardy-weinburg principle |
Principle that allele frequencies in a population will remain constant unless 1 or more factors cause the frequencies to change |
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genetic equilibrium |
Situation in which allele frequencies remain constant
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reproductive isolation |
Separation of species of populations so that they cannot interbreed and produce fertile offspring
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behavioral isolation |
Separation of species of populations so that they cannot interbreed and produce fertile offspring
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geographical isolation |
Form of reproductive isolation in which 2 populations are separated physically by geographic barriers such as rivers, mountains, and water
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temporal isolation |
Form of reproductive isolation in which 2 populations reproduce at different times
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speciation |
Formation of a new species
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