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    HS-LS4-2

    Construct an explanation based on evidence that the process of evolution primarily results from four factors: (1) the potential for a species to increase in number, (2) the heritable genetic variation of individuals in a species due to mutation and sexual reproduction, (3) competition for limited resources, and (4) the proliferation of those organisms that are better able to survive and reproduce in the environment.
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     Artificial Selection and the Evolution of Domestic Dogs
    0

    Artificial Selection and the Evolution of Domestic Dogs

    Looking at a wolf and a German shepherd, it is easy to think: "Sure, related." But what about a wolf and a Pekinese? Have you ever seen those dogs? They look like adorable walking footstools! [...]

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     Antibiotic Resistance and Bacterial Evolution
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    Antibiotic Resistance and Bacterial Evolution

    Picture it: A giant (like, seriously giant) tray full of bacteria. Billions and billions of bacteria just growing and spreading. A germaphobe's worst nightmare? Nah. These bacteria (like most [...]

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     Evolution and E. coli: Natural Selection in a Constant Environment
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    Evolution and E. coli: Natural Selection in a Constant Environment

    Researchers have been tracking E.coli through 60,000 generations to answer a fundamental question: How does natural selection work in a constant, stable environment?

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     From Gene to Disease: Sickle Cell Anemia
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    From Gene to Disease: Sickle Cell Anemia

    Think that evolution always results in disadvantageous traits becoming less common in a population? Think again.

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