Small Population- Evolution

Genetic drift is more likely to happen in...

• aquatic populations

• small populations

• terrestrial populations

• older populations

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

• random chance

• natural selection

• non-random mating (sexual selection)

• artificial selection

Which of the following is an example of the founder effect?

• Humans choose two dogs they like the characteristics of and breed them together.

• Affected individuals with blue skin can trace their ancestry back to one of the first settlers in the region.

• The environment of a fox population changes and over time foxes who are white survive and pass on their genes to their offspring.

• Cheetah populations reach their lowest levels with reduced diversity and as they rebound are so genetically similar they appear to be inbred.

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NGSS.HS-LS4-2

NGSS.HS-LS4-4

Which of the following is an example of the bottleneck effect?

• Cheetah populations reach their lowest levels with reduced diversity and as they rebound are so genetically similar they appear to be inbred.

• Affected individuals with blue skin can trace their ancestry back to one of the first settlers in the region.

• The environment of a fox population changes and over time foxes who are white survive and pass on their genes to their offspring.

• Humans choose two dogs they like the characteristics of and breed them together.

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NGSS.HS-LS4-4

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 an example of the founder 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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NGSS.HS-LS4-2

Happens only in small populations, and is the change in the frequency of a gene variant (allele) in a population due to random sampling of organisms.

• Extinction
• Genetic Drift
• Bottleneck Effect
• Founder Effect

This mechanism of evolution occurs when populations migrate.

• Extinction
• Gene flow
• Genetic drift
• Natural Selection

The model below shows a how populations of organisms can change. Which of the   following concepts is best illustrated by this demonstration?                                          

•  Evolution of a predatory species
• Genetic drift 
•  Environmentally induced genetic mutations 
• Gene flow 

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NGSS.MS-LS4-4

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

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NGSS.MS-LS2-4

NGSS.MS-LS4-4