Genetic Drift Pre-Lab Quiz 2020

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

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

Changes in allele frequency due to genetic drift is more likely to happen in...

• aquatic populations

• small populations

• terrestrial populations

• older populations

This mechanism of evolution occurs when individuals migrate between populations.

• Extinction

• Gene flow

• Genetic drift

• Natural Selection

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 randomly caught 20 of the remaining seals and used them to start a new population in the northwest Pacific Ocean. This is an example of... (choose all that apply)

• Genetic drift

• Bottleneck Effect

• Natural Selection

• Founder effect

• Gene Flow

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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Which of the following is an example of natural selection?

• 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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Group of organisms all of the same species, living in the same place at the same time.

• gene pool

• population

• species

• evolution

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All of the genetic information found in a population.

• population

• genetic drift

• evolution

• gene pool

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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

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Natural selection states that organisms are best suited for their environment if they ____________ and ____________.

• Survive and Reproduce
• Survive and Predate
• Survive and Parasitize
• Survive and Adapt

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