Mechanisms of Evolution

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A type of genetic drift in which small groups of organisms separate from a larger population and form new small colonies.

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Founder Effect

Front

The exchange of genes between two populations.

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Gene Flow

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Gene pool

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The total genetic information found in a population; the complete collection of all the alleles found in a population.

Front

This is one of the mechanisms of evolution; it is a continuous process in which organisms with traits that make them better-adapted to their environment are more likely to survive and reproduce than organisms without such adaptations.

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Natural selection

Front

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.

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Bottleneck effect

Front

This is the process that ultimately creates new variations and changes in DNA; leads to the creation of new alleles.

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Mutation

Front

Why are mutations important?

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genetic variation needed for a population to evolve

Front

Survival of the fittest or when favorable adaptations reproduce faster is called what?

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Natural selection

Front

What does the picture represent? Options: Founder Effect, Mutations, Bottleneck effect, Gene Flow

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Bottleneck effect

Front

What mechanism of evolution occurs when allele frequencies change over generations due to random chance?

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Genetic Drift