The bottleneck effect is caused by a severe reduction in population size (e.g. due to a natural disaster). By randomness alone, certain alleles may be overrepresented, underrepresented, or altogether eliminated among the survivors. This makes the effects of genetic drift more pronounced, and often reduces levels of genetic variation for long periods of time.
L'effetto collo di bottiglia è causato da una grave riduzione delle dimensioni della popolazione (ad esempio, a causa di un disastro naturale). Per pura casualità, determinati alleli possono essere sovrarappresentati, sottorappresentati o del tutto eliminati tra i sopravvissuti. Ciò rende gli effetti della deriva genetica più pronunciat i, e spesso riduce i livelli di variazione genetica per lunghi periodi di tempo.
| Text | The bottleneck effect is caused by a severe reduction in population size (e.g. due to a natural disaster). By randomness alone, certain alleles may be overrepresented, underrepresented, or altogether eliminated among the survivors. This makes the effects of genetic drift more pronounced, and often reduces levels of genetic variation for long periods of time. |
|---|
Learn with these flashcards. Click next, previous, or up to navigate to more flashcards for this subject.
Next card: Isolated population founder effect individuals larger establish gene
Previous card: Genetic drift refers random change frequency allele population.
Up to card list: AP Biology Complete Deck