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10 Cards in this Set
- Front
- Back
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Founder effect |
A small number of individuals emigrate from a population or become geographically isolated from original population |
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Allele |
Each of 2 or more alternative forms of a gene that arise by mutation and are found at the same place on a chromosome ge |
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Gene flow |
Occurs when individuals move into (immigrate) or move out (emigrate) a population |
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Gene pool |
The total stack of different genes in an interbreeding population |
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Genetic drift |
The process of change in the generic composition of a population due to the change or random events rather than by natural selection |
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Genetic variation |
The difference in alleles in the gene pool of a population |
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Mutation |
A permanent change in nucleotide sequence of DNA |
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Natural selection |
The process whereby organisms better adapted to their environments tend to survive and produce more offspring |
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Population bottleneck |
A sharp reduction in the size of a population due to environmental events (earthquakes, volcano, fires, floods) or human activity |
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Sexual selection |
A type of natural selection where members of one sex choose mates of the other sex to mate with based on preferential phenotypic features |
