Evolution and Genetic Drift

• Gene flow

• natural selection

• bottleneck effect

• founder effect

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This term refers to the total genetic information found in a population; the complete collection of all the alleles found in a population

• Gene library

• Genome

• Gene pool

• Allele pool

This is one of the mechanisms of evolution; it occurs when individuals move into or out of a population, either by physically arriving or leaving, or by being born or dying

• Gene flow / genetic drift

• Founder effect

• Natural selection

• Microevolution

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This occurs when a large population is drastically reduced by an event such as a natural disaster; the population's new gene pool only contains alleles from the survivors

• Founder effect

• Bottleneck effect

• Meteor effect

• Natural selection

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• gene flow

• natural selection

• bottleneck effect

• founder effect

Tags

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NGSS.HS-LS4-4

NGSS.HS-LS4-5

• gene flow

• natural selection

• bottleneck effect

• founder effect

Tags

NGSS.HS-LS4-2

NGSS.HS-LS4-4

NGSS.HS-LS4-5

• gene flow

• natural selection

• bottleneck effect

• founder effect

Tags

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A bee carrying pollen from one flower population to another flower population.

• gene flow

• natural selection

• bottleneck effect

• founder effect

Thanks to a better food source, giraffes with longer necks were able to survive to reproduce and so passed on the characteristic to the succeeding generation.

• gene flow

• natural selection

• bottleneck effect

• founder effect

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NGSS.HS-LS4-4

Northern elephant seals have reduced genetic variation because of humans hunting them in the 1890s. Hunting reduced their population size to as few as 20 individuals at the end of the 19th century.

• Gene flow

• natural selection

• bottleneck effect

• founder effect.