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individuals with alleles for an extreme type are more likely to survive and reproduce

• stabilizing selection

• directional selection

• disruptive selection

• genetic drift

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Individuals with intermediate traits are more likely to survive and reproduce

• stabilizing selection

• directional selection

• adaptive radiation

• disruptive selection

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Yellow toucan birds seek out one another to make babies together and tend to avoid the green toucan birds.

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

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Modern whales developed their traits through natural selection.  What occurs during the process of natural selection?

• Organisms choose mates from other species to create new species
• Breeders selectively cross organisms with desired traits
• Only the fittest organisms can survive and reproduce
• Organisms remain exactly the same over time.

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bald eagles

• K-selected

• r-selected

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blue whale

• K-selected

• r-selected

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Adapatation are caused by

• natural selection

• harsh environmets

• unique organisms

• evolution

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A certain type of plant can produce blue or yellow flowers. During a fire, many yellow flowers are destroyed and now since blue is the dominant trait, the plant reproduces offspring that produce only blue flowers.

• Non-Random Mating

• Gene Flow

• Mutation

• Genetic Drift

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NGSS.HS-LS4-4

A reintroduced population of wolves in a national park is 90 percent grey and 10 percent black, consistent with the wolf population in other regions. After several generations in isolation, the national park’s wolf population is 60 percent grey and 40 percent black. The wolf population has likely experienced

• natural selection

• genetic drift

• mutations

• migration

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Adaptations are features you are born with that either help you or hurt you in your environment.

• True

• False

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