Other Means of Evolution - Review

Which is a mechanism that causes a change in allele frequency?

• gene flow
• genetic drift
• natural selection
• all answers are correct

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This mechanism of evolution occurs when populations migrate.

• Extinction
• Gene flow
• Genetic drift
• Natural Selection

A chance occurrence that negatively affects a population because the population is small.

• genetic drift
• mutation
• speciation
• migration

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The type of genetic drift that follows the colonization of a new habitat by a small group of individuals is called

• the Hardy-Weinberg principle
• the founder effect
• directional selection
• the bottleneck effect

Which of the following is true of genetic drift?

• It can decrease genetic diversity in a population
• It is necessary in order for a population to be in equilibrium
• It can increase genetic diversity in a population 
• It plays a much larger role in determining the genetic makeup of populations than natural selection 

There was once a large population of cheetah, but about 12,000 years ago most of the cheetahs were killed off because of human activity and only a few survived.  What is this an example of?

• Bottleneck Effect
• Genetic Drift
• Founder Effect
• Natural Selection

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What does the image represent?

• Gene flow
• Genetic drift
• Mutation
• Adaptation

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

• Genetic Drift
• Sexual Selection
• Gene flow
• Mutation

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Mechanism of evolution that occurs when females decide to mate with organisms that have the best traits or the ability to fight.

• Sexual Selection
• Natural Selection
• Gene Flow
• Genetic Drift

Although their large and elaborate tail feathers make male peacocks more conspicuous to predators and hinder their ability to fly, female peahens prefer bright colored tails in mates. What is this an example of?

• Sexual Selection

• Gene Flow

• Genetic Drift

• No Mutations

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