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Science

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5 Mechanisms of Evolution

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  • 1. Multiple Choice
    1 minute
    1 pt

    Reindeer from a rancher in Alaska escape from their pen during an enormous snow storm. After their escape, they mate with wild caribou that are migrating across the land. The offspring of these have traits for short legs and have tame behavior.

    Gene Flow

    Genetic Drift

    Non-Random Mating

    Natural Selection

  • 2. Multiple Choice
    1 minute
    1 pt

    Males of the bighorn sheep species fight one another to show females who is the dominant male and are more likely to mate with females.

    Natural Selection

    Mutation

    Genetic Drift

    Non-Random Mating

  • 3. Multiple Choice
    1 minute
    1 pt

    During a hurricane, a population of beetles almost gets completely wiped out. The only beetles that survived were lucky that they were in their nest at the time of the hurricane and had enough food to survive.

    Natural selection

    Genetic Drift

    Gene Flow

    Non-Random Mating

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