Day 5_Semes2_TEK 7E/7F_BR

A physical trait favored by an environmental change can be called an

• Extinction

• Adaptation

• Possibility

• Mutation

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Mutations are a mechanism of evolution. Which describes mutation as a mechanism of evolution? Select two answers

• Decrease the population size

• Introduce new traits into the gene pool

• Organisms that are better adapted to their environment survive and reproduce

• Increases genetic variation.

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Genetic drift is the change in the allele frequency of a population due to

• Artificial Selection

• Non-random mating (sexual selection)

• Random Chance

• Natural Selection

Wolves from the Arizona mesa were transferred to the Colorado Rockies after a forest fire destroyed their habitat. They quickly became part of the local pack and had offspring.

• Gene Flow

• Mutation

• Genetic Drift

• Natural Selection

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A population of 122 wild Mustangs was diminished to half due to a flash flood in the prairies of Iowa.

• Mutations

• Gene flow

• Non-random mating

• Genetic Drift

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What does the image represent?

• Gene flow

• Gene drift

• Adaptation

• Mutation

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Yellow toucan birds seek out one another to make babies together and tend to avoid the green toucan birds.

• Gene Flow

• Mutation

• Genetic Drift

• Non-random mating

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What does this picture represent?

• Gene Flow

• Bottleneck effect

• Founder effect

• Mutations

What does the image represent?

• Natural selection

• Founder effect

• Bottleneck effect

• Mutation

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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

• Natural Selection

• Gene flow/genetic drift

• Microevolution

• Directional selection

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