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        Grades

        6-12

        Permitted Use

        Stream Only


        Part of Evolution Series
        91 Favorites
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        Sex and the Single Guppy

        Mating in the wild can be dangerous business, especially when the bright colors, big tails, and flashy patterns some animals use to attract potential mates can also attract predators. In this Evolution feature, based on a famous experiment by John Endler, users create virtual streams and stock them with bright to drab male guppies and up to three different predators. With each simulation, the guppy population changes due to selection pressure from both predators and mates. Requires Adobe Shockwave Player.

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