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15 Cards in this Set
- Front
- Back
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Population genetics |
Study of genes in a population |
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Study of genes in a population |
Extent of variation, why variation exists, how gene pools change |
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Gene pool |
Collection of alleles, change in frequency |
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Polymorphic |
2+ alleles influencing phenotype |
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Monomorphic |
Predominantly single allele in large healthy population |
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Origin of new genetic variation |
Mutations, gene duplication, horizontal gene transfer |
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Evolutionary mechanisms |
Natural selection, genetic drift, migration, nonrandom mating |
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Reproductive success |
Better adapted to environment, directly linked to reproduction |
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Natural selection pattern |
Directional, stabilizing, disruptive, balancing |
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Balancing selection |
Maintains genetic diversity, balanced polymorphism |
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2 common methods of balancing selection |
Heterozygote favored, negative frequency dependent selection |
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Sexual selection |
Individuals with certain traits are more likely to engage in reproduction |
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Balancing selection |
Multiple alleles are kept in balance |
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Intrasexual selection |
Often direct |
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Intersexual selection |
Cryptic female choice, showy characteristics |
