Population Genetics

A drastic reduction in the size of a population that can change allele frequencies is called

• the bottleneck effect

• the founder effect

• the gene flow effect

• the Thanos effect

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What does the image represent?

• Genetic drift

• Mutation

• Adaptation

• Gene flow

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What do we call ALL of the genetic information found in a population?

• Population

• Genetic Drift

• Evolution

• Gene pool

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One day a group of scientists collected a small group of brown anole lizards from a large group of the lizards.  Then they placed this small group of lizards on an island that had no brown anole lizards on it.  What is this an example of?

• Bottleneck Effect

• Hardy Effect

• Founder Effect

• None of These

The extreme population phenotypes are favored by the environment.

• Disruptional (Diversifying) Selection

• Directional Selection

• Stabilizing Selection

• All of the above

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What is the frequency of the dominant allele in this population?

• 30%

• 50%

• 63%

• 37%

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

• Microevolution

• Mutation

• Gene flow

• Genetic drift

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What is gene flow?

• A change in the gene pool due to chance

• A reduction in populations caused by natural disasters, disease, and hunting

• The addition or removal of genes due to individuals entering or leaving the population

• A change in gene frequencies when a new population arises from a few individuals

There are two types of beetles: red beetles and green beetles. The beetles live in a forest full of trees. The birds in the forest seem to be eating ONLY the red beetles. The green beetles are not eaten. Which phenotype is favored and why?

• The green beetles because they stand out the most

• The red because they are more delicious so they are eaten more

• The red beetles because are not as big

• The green beetles are favored because they blend in with the trees

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Which of the following is an example of the bottle neck effect?

• Bald Eagles are hunted until near extinction, population recovers.

• Small group of iguanas floats to an island, starts a new population.

• Red fox pups are more likely to survive in a snowy environment if they are born white.

• Farmer chooses seeds from largest apples to plant next year. This results in larger apples from year to year.

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