Evolution 3

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

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

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

This mechanism of evolution occurs when populations migrate.

• Extinction
• Gene flow
• Genetic drift
• Natural Selection

Which of the following is true?

• Gene pool frequencies do not change as a result of migration in or out of a population.
• Gene flow occurs only as a result of isolation of a small population.
• Gene flow can cause new alleles to enter a population's gene pool.
• Gene flow is due the the selection of the most favorable traits.

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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NGSS.HS-LS4-4

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What increases genetic variation when animals move from one population to another

• genetic drift
• sexual selection
• bottleneck effect
• gene flow

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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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NGSS.HS-LS4-2

Five hundred years after the deer had established a flourishing population in the park, a few of them venture back to their original woods and have babies with the deer there.

• Genetic Drift
• Mutations
• Non-random mating
• Gene flow

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NGSS.HS-LS4-2

NGSS.HS-LS3-2

In the bead lab, changes in the alleleic frequency (proportion of three color variants) was most drastic in which trial?

• The trial when 20-15 beads were drawn.
• The trial when less than five beads were drawn.
• The trial where students where allowed to choose which beads were selected.
• The number of beads drawn has no effect on allele frequencies.

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NGSS.HS-LS4-2

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