Founder Effect

A virus killed most of the seals in the North Sea (e.g. dropped the population from    8000 to 800).  In an effort to help preserve the species, scientists caught 20 of the   remaining seals and used them to start a new population in the northwest Pacific   Ocean.  Which of the following statements would accurately describe the new   population?  

• The new seal population is genetically less diverse than the original population 

• The new seal population is genetically more diverse than the original population

• There is equal genetic variety compared  to the original population 

• None of the answers

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NGSS.HS-LS3-2

The Amish have a higher frequency of polydactyly (extra fingers) in their community than the general population. This is due to the allele for extra fingers being present in the group that started the Amish community.

• The difference in allele frequency is due to genetic flow.

• The difference in allele frequency is due to the founder effect.

• The difference in allele frequency is due to a bottleneck.

• The difference in allele frequency is due to speciation.

Select all answers below that describe the founder effect.

• Changes allele frequencies

• Occurs when a new population arises from only a few individuals

• Can result in a loss of genetic diversity

• Is caused by a disaster that kills off most individuals in a population

A few deer wander out of their native woods into a completely new park where no deer had ever been before. They go on to create an entirely new population.

• gene pool 

• founder effect

• bottleneck

• mutation

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Which of the following best describes the founder effect?

• A small group of individuals establishes a new population with a different allele frequency than the original population.

• A large population undergoes a sudden reduction in size due to a natural disaster.

• A population evolves due to random mutations over time.

• A population experiences a change in allele frequency due to migration.

The founder effect is most likely to occur in which of the following scenarios?

• A large, genetically diverse population.

• A small group of individuals colonizing a new habitat.

• A population experiencing a high mutation rate.

• A population undergoing natural selection.

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NGSS.HS-LS4-2

Which of the following is a potential consequence of the founder effect?

• Increased genetic diversity in the new population.

• Decreased genetic diversity in the new population.

• No change in genetic diversity.

• Increased mutation rates.

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NGSS.HS-LS4-2

A small group of birds is blown off course during migration and settles on an isolated island. This scenario is an example of:

• Genetic drift

• Founder effect

• Gene flow

• Natural selection

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How does the founder effect differ from a genetic bottleneck?

• The founder effect involves a new population, while a bottleneck involves a reduction in an existing population.

• A bottleneck results in increased genetic diversity, while the founder effect does not.

• The founder effect is caused by natural selection, while a bottleneck is not.

• A bottleneck occurs in large populations, while the founder effect occurs in small populations.

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NGSS.HS-LS4-2

Which of the following statements is true about the founder effect?

• It always leads to speciation.

• It can lead to reduced genetic variation.

• It increases the genetic variation of a population.

• It is a result of artificial selection.