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19 Cards in this Set
- Front
- Back
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Evolution |
descent with modification |
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Microevolution |
changes in frequencies of certain gene varianta within a population |
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Macroevolution |
different species from a common ancestor over many generations (physical traits) |
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Mutation |
random gene variability, original population has new allele frequencies |
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Natural Selection |
allele frequencies depend on traits that give more advantage |
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Sexual Selection |
choosing traits that are better to pass on (fitness) |
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Migration / Gene Flow |
both populations have new allele frequencies |
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Gene drift |
random process affecting small populations |
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Founder Effect |
due to migration, founder establishes a subpopulation as a new colony drawn from larger populations (artifical colonies) |
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Bottleneck Effect |
population size is reduced for at least one generarion (ex. natural disasters) and surviving population has new allele freque cies by chance |
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Coevolution |
two or more species affect each other's evolution |
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species |
group of individuals that can potentially interbreed in nature |
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speciation |
lineage-splitting event that produces two or more separate species |
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allopatric speciation |
same "patriarchy", different environment and mother (lineage-splitting event) |
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sympatric speciation |
same place and environment (lineage-splitting event) |
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reproductive isolation |
lack of capability to mate with other species (different signals or reproductive parts) |
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phylogeny |
evolutionary history of a species or a group of species |
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systematics |
classification of organisms accdg to evolutionary relationships |
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taxonomy |
oldest method, naming and classification of organisms |
