Genetic Drift Quiz

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

• random chance
• natural selection
• non-random mating (sexual selection)
• artificial selection

 Genetic Drift is more likely to happen in... 

• aquatic populations
• small populations
• terrestrial populations
• older populations

This mechanism of evolution occurs when individuals migrate (emigrate, immigrate) between populations.

• Extinction

• Gene flow

• Genetic drift

• Natural Selection

All of the genetic information found in a population.

• population

• genetic drift

• evolution

• gene pool

Tags

NGSS.HS-LS4-2

A change in the genetic composition of a population as a result of descending from a small number of colonizing individuals is called:

• founder effect
• bottleneck
• genetic drift
• gene flow

Tags

NGSS.HS-LS4-2

According to Genetic drift (bottleneck or founder) tends to ___________ genetic variation (diversity).

• Increase

• Decrease

• Stabilize

• Exaggerate

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NGSS.HS-LS4-5

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.

Tags

NGSS.HS-LS4-4

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.

Tags

NGSS.HS-LS4-2

NGSS.HS-LS4-4

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-LS3-1

NGSS.HS-LS3-2

Any change within a populations gene frequency that causes a dramatic reduction (natural disaster, disease, hunting) of a population's size.

• Genetic Bottleneck

• Founder Effect

• Natural Selection

• Evolution

Tags

NGSS.HS-LS4-5