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Meet the colorful takahē, an extremely rare flightless bird. Find out more about its unique features and why they matte..

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In plants, growth occurs in meristems, which are the site of repeated cell division of unspecialized cells. These cells ..

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This tutorial looks at sex determination via the sex chromosomes, X and Y. Read it to get more info on X and Y chromosom..

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The movement of molecules (specifically, water and solutes) is vital to the understanding of plant processes. This tuto..

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Neurons generate electric signals that they pass along to the other neurons or target tissues. In this tutorial, you wil..