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Cities Stocks Weather Movies Coupons Travel Blogs Health Horoscope Maps ASIA EUROPE Classifieds Yellow PagesIn population genetics, a gene pool is the complete set of unique alleles in a species or population. A large gene pool indicates extensive genetic diversity, which is associated with robust populations that can survive bouts of intense selection. Meanwhile, low genetic diversity (see inbreeding and population bottlenecks) can cause reduced biological fitness and an increased chance of extinction.
When all individuals in a population are identical with regard to a particular phenotypic trait they are known as monomorphic. When the individuals show several variants of a particular trait they are said to be polymorphic .
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| Subfields of genetics | |
|---|---|
| Main subjects | Classical genetics · Conservation genetics · Ecological genetics · Immunogenetics · Molecular genetics · Population genetics · Quantitative genetics |
| Related topics | Geneticist · Genomics · Medical genetics · Molecular evolution · Reverse genetics |
| Basic topics in evolutionary biology | |
|---|---|
| Evidence of evolution | |
| Processes of evolution | Adaptation · Macroevolution · Microevolution · Speciation |
| Population genetic mechanisms | Natural selection · Genetic drift · Gene flow · Mutation |
| Evolutionary developmental biology (Evo-devo) concepts | Phenotypic plasticity · Canalisation · Modularity |
| The evolution of... | DNA · Sex · Aging · Intelligence · The Ear · The Eye · Flight · Plants · Fungi · Animals · Homo sapiens |
| Modes of speciation | Anagenesis · Catagenesis · Cladogenesis |
| History | History of evolutionary thought · Charles Darwin · On the Origin of Species · Modern evolutionary synthesis · Gene-centered view of evolution · Evolutionary history of life · Life (classification trees) |
| Other subfields | Ecological genetics · Human evolution · Molecular evolution · Phylogenetics · Systematics |
| List of evolutionary biology topics · Timeline of evolution | |
| Topics in population genetics | |
|---|---|
| Key concepts | Hardy-Weinberg law • genetic linkage • linkage disequilibrium • Fisher\'s fundamental theorem • neutral theory • Price equation |
| Selection | natural • sexual • artificial • ecological |
| Effects of selection on genomic variation | genetic hitchhiking • background selection |
| Genetic drift | small population size • population bottleneck • founder effect • coalescence |
| Founders | R.A. Fisher • J. B. S. Haldane • Sewall Wright |
| Related topics | evolution • microevolution • evolutionary game theory • fitness landscape • genetic genealogy |
| List of evolutionary biology topics | |
| This genetics article is a stub. You can help Wikipedia by expanding it. |
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