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| intrasexual selection |
a direct competition among individuals of one sex for mates of the oppostie sex |
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inomnia1 Mon, 09 Feb 2009 21:06:36 GMT |
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| stabilizing selection |
natural selection that favors intermediate variants by acting against extreme phenotypes |
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inomnia1 Mon, 09 Feb 2009 21:06:36 GMT |
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| relative fittness |
the contribution of one genotype to the enxt generation compared to that of alternative genotypes for the same locus |
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inomnia1 Mon, 09 Feb 2009 21:06:36 GMT |
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| polymorphic |
referring to a population in which two or more physical forms are present in readily noticable frequencies |
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inomnia1 Mon, 09 Feb 2009 21:06:36 GMT |
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| heterzygote advantage |
greater reproductive success of heterzygous individuals compared to homozygotes |
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inomnia1 Mon, 09 Feb 2009 21:03:12 GMT |
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| gene flow |
the loss or gain of alleles in a population due to the migration of fertile individuals or gametes between populations |
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inomnia1 Mon, 09 Feb 2009 21:03:12 GMT |
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| founder's effect |
genetic drift attributable to colonization by a limited number of individuals from a parent population |
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inomnia1 Mon, 09 Feb 2009 21:03:11 GMT |
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| bottleneck effect |
genetic drift resulting from the reduction of a population, typically by natural diaster |
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inomnia1 Mon, 09 Feb 2009 21:03:11 GMT |
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| microevolution |
a change in the gene opool of a population from generation to generation |
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inomnia1 Mon, 09 Feb 2009 20:59:58 GMT |
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| genetic drift |
changes in the gene pool of a small population due to chance |
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inomnia1 Mon, 09 Feb 2009 20:59:58 GMT |
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| hardy-Weinberg equilibrium |
the condition describing a nonevolving population (genetic equilibrium) |
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inomnia1 Mon, 09 Feb 2009 20:59:58 GMT |
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| population |
a group of individuals of one species that live in a particular geographic area |
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inomnia1 Mon, 09 Feb 2009 20:59:58 GMT |
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| vestigial organs |
structures of marginal, if any, importance to the organism |
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inomnia1 Mon, 09 Feb 2009 20:56:36 GMT |
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| biogeography |
the study of the past and present distribution of species |
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inomnia1 Mon, 09 Feb 2009 20:56:36 GMT |
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| endemic |
species that are confined to a specific, relativly small geographic area |
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inomnia1 Mon, 09 Feb 2009 20:56:36 GMT |
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| homology |
similarity in characteristics reasulting from the shared ancestry |
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inomnia1 Mon, 09 Feb 2009 20:56:36 GMT |
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| descent with modification |
Darwin's initial phrase for the general processes of evolution |
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inomnia1 Mon, 09 Feb 2009 20:53:38 GMT |
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| gradualism |
change attributed to the cumulative product of slow but continuous change |
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inomnia1 Mon, 09 Feb 2009 20:53:38 GMT |
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| taxonomy |
branch of science that names and classifies organisms |
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inomnia1 Mon, 09 Feb 2009 20:53:38 GMT |
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| natural selection |
differential success in the reproduction of different phenotypes resulting from the interaction of the organism with its enviroment |
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inomnia1 Mon, 09 Feb 2009 20:53:38 GMT |
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