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    HS-LS4-2

    Construct an explanation based on evidence that Darwin’s theory of evolution by natural selection occurs in a population when the following conditions are met: (a) more offspring are produced than can be supported by the environment, (b) there is heritable variation among individuals, and (c) some of these variations lead to differential fitness among individuals as some individuals are better able to compete for limited resources than others.
    Home / HS-LS4-2
     Antibiotic Resistance and Bacterial Evolution
    0

    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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     Convergent Evolution in Animal Locomotion
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    Convergent Evolution in Animal Locomotion

    Fins, wings, and...fractions? Find out how simple measurements revealed a striking convergence among animals as varied as whales, birds, and sea butterflies. (Wondering what a sea butterfly is? [...]

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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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