Evolutionary mechanisms

A _______________________ consists of a group of individuals that belong to the same species and that live in a particular area.

• Community
• Niche
• Population
• None of the above

What is the likely outcome of the blue bird (aa) moving across the stream to join the pink birds (AA)?

• Allele frequency suddenly changes
• Gene flow occurs between the populations
• The genotypes reach a chaotic state
• Phenotypes increase in the species

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NGSS.HS-LS4-2

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the free tailed bat migrates from the caves in Mexico to Congress Street Bridge in Austin, Texas to give birth to their young. On the way a small group decides to make a church tower in south Texas their new home. This would result in .....

• genetic diversity increasing in the new population
• genetic diversity staying constant in the population
• genetic diversity decreasing in the population
• none of the above

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NGSS.MS-LS1-5

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A genetic change causes these daisies to look like "chernobyl" daisies resulting in deformed centers.  The diversity of genes will likely increase in this daisy population.  This increase is due to--

• Genetic drift
• Gene flow
• Mutation
• Other evolutionary mechanisms

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NGSS.HS-LS3-2

Which mechanism is known as any change in the allelic frequencies in a population that is due to change (isolation)?

• genetic drift
• gene flow
• mutation
• nonrandom mating

Wolves from the Arizona mesa were transferred to the Colorado Rockies after a forest fire destroyed their habitat. They quickly became part of the local pack and had offspring.

• Mutation
• Natural Selection
• Genetic Drift
• Gene Flow

Tags

NGSS.HS-LS4-2

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Bats are common in Texas, especially in rocky regions. Bats with longer hang claws have demonstrated higher fitness because of their ability to cling to rock while resting.

• Adaptation
• Non-random mating
• Gene Flow
• Mutation

Tags

NGSS.HS-LS4-2

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What does the image represent?

• Founder effect
• Bottleneck effect
• Natural Selection
• Mutations

Tags

NGSS.HS-LS4-2

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On island chains like the one shown below, animal populations that spread from the main island to the other islands can evolve into separate species. Which of the following best explains why speciation can occur in this situation? 

• Predators on the main island can easily migrate to follow the populations to the other islands.
• The physical separation of the islands from the main island limits gene flow and interbreeding between the populations.
• Lack of disease on the other island enables the populations to grow and change without limits.
• The climatic conditions of the islands allow the populations to breed all year long and produce several generations.

Tags

NGSS.HS-LS4-2

NGSS.HS-LS4-4

What does the image represent?

• Founder effect
• Bottleneck effect
• Mutation
• Natural Selection

Tags

NGSS.HS-LS4-2