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1443007
Level 3: Genetic Drift
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Mind Map on Level 3: Genetic Drift, created by ZoeZhou on 10/10/2014.
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ZoeZhou
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ZoeZhou
almost 10 years ago
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Resource summary
Level 3: Genetic Drift
Identify the “Golden Nuggets”
Both: affect outcome of a population.
Natural selection
When a species adapts to an environment
Selective and fitness.
Increases genetic variation.
acts on the phenotype.
more or less common in a population
Genetic drift
Depends on population size, and has the most impact on smaller populations. Reduces genetic variation. Depends on environment. (Random)
Founder Effect
comes from a small population, which is originally bigger than the new population
Bottleneck
starts with a large population and is reduced down drastically then raised up.
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