Evolutionary Mechanisms

 In which scenario is Genetic Drift most likely to have a significant impact? 

• in large, mixed populations

• during mass migration events

• in isolated, small populations

• in populations with high mutation rates

A _____________________ involves a change in the genetic code of an organism.  Because this change occurs in the genetic code, it is passed on to future generations.

• Morphology
• Mutation
• Gene Flow
• Genetic Drift

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Which of the following terms represents the movement of individuals into or out of an area?

• natural selection

• mutation

• gene flow

• adaptation

Which of the following is an example of genetic drift?

• A herd of cattle being selectively bred for increased milk production

• A population of plants adapting to a new climate through natural selection

• A small population of birds being isolated on an island and developing different traits over time.

• A group of fish developing different colors due to environmental factors

What occurs when members of one population migrate and interbreed with another population.

• Mutation

• Gene Flow

• Adaptation

• Gene Pool

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What is the effect of genetic drift on a small population?

• It increases genetic diversity

• It has no effect on the genetic makeup

• It can lead to a loss of genetic variation

• It promotes gene flow

What is the primary cause of genetic variation within a population?

• Gene flow

• Mutation

• Non-random mating

• Natural selection

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Evolution is...

• A change in the gene pool
• A field of study where one studies weather.
• The study of rock strata.
• The study of cladograms

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Which mechanism of evolution is represented by the pinky finger?

• genetic recombination

• natural selection
• genetic drift

• mutation

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Which mechanism of evolution is represented by the ring finger?

• genetic recombination

• natural selection
• genetic drift

• mutation

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