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| 31676142 | balanced polymorphism | the ability of natural selection to maintain diversity in a population | |
| 31676143 | bottleneck effect | genetic drift resulting from the reduction of a population typically by a natural disaster, such that the surviving population is no longer genetically representative of the original population | |
| 31676144 | cline | graded variation in some traits of individuals that parallels a gradient in the environment | |
| 31676145 | Darwinian fitness | the contribution an individual makes to the gene pool of the next generation, relative to the contributions of other individuals | |
| 31676146 | founder effect | genetic drift attributable to colonization by a limited number of individuals from a parent population | |
| 31676147 | frequency-dependent selection | a decline in the reproductive success of a morph resulting form the morph's phenotype becoming too common i a population; a cause of balanced polymorphism in populaitons | |
| 31676148 | gene flow | the loss or gain of alleles in a population due to the migration of fertile individuals or gametes between populations | |
| 31676149 | gene pool | the total aggregate of genes in a population of any one time | |
| 31676150 | genetic drift | changes in the gene pool of a small population due to a chance | |
| 31676151 | geographic variation | differences in genetic structure between populations | |
| 31676152 | Hardy-Weinberg formula | a formula for calculating that frequences of genotypes in a gene pool from the frequences of allels and vice versa | |
| 31676153 | Hard-Weinberg equilibrium | the condition describing a nonevolving population (one that is in genetic equilibrium) | |
| 31676154 | Hardy-Weinberg theorem | an axiom maintaining that the sexual shuffling of genes alone cant alter the overall genetic makeup of a population | |
| 31676155 | Heterozygote advantage | Greater reproductive success of heterozygeous individuals compared to homozygotes; tens to preserve variation in gene pools | |
| 31676156 | intersexual selecion | individuals of one sex (usually females) are choosy in selecting their mates from individuals of other sex, also called mate choice | |
| 31676157 | intrasexual selecion | a direct competetion among individuals of one sex (usually the males in vertebrates) for mates of the opposite sex | |
| 31676158 | microevolution | a change in the gene pool of a population from generation to genteration | |
| 31676159 | modern synthesis | a comprehensive theory of evolution emphasizing natural selection, gradualism, and populations as the fundamental units of evolutionary change; also called neo-Darwinism | |
| 31676160 | mutation | a rare change in the DNA of a gene ultimately creating genetic diversity | |
| 31676161 | natural selection | Differential success in the reproduction of different phenotypes resulting form the interaction of organisms with their environment. evolution occurs when natural selection causes changes in relative frequencies of alleles in the gene pool. | |
| 31676162 | neutral variation | genetic diversity that confers no apparent selective advantage | |
| 31676163 | polymorphism | the coexistance of two or more distinct forms of individuals (polymorphic characters) in the same population | |
| 31676164 | population genetics | the study of genetic changes in populations; the science of microevolutionary changes in populations | |
| 31676165 | population | a group of individuals of one species that live in a particular geographic area | |
| 31676166 | reletive fitness | the contribution of one genotype to the next generation compared to that of alternative genotypes for the same locus | |
| 31676167 | sexual dimorphism | a special case of polymorphism based on the distiction between the secondary sex characteristics of males and females | |
| 31676168 | species | a group whose members possess similar anatomical characteristics and have the ability to interbreed |
