Anterior-posterior polarity, illustration

Anterior-posterior polarity, illustration

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Credit: CLAUDIA STOCKER/SCIENCE PHOTO LIBRARY

Caption: Anterior-posterior polarity, illustration. The unequal distribution of proteins or other factors within a newly fertilised zygote or developing embryo is a key mechanism for establishing the axes within the organism around which development may proceed. For example, anterior-posterior polarity in the nematode worm Caenorhabditis elegans is dictated by the flow of cytoplasmic granules and PAR proteins to one side of the the embryo.

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Keywords: animal, anterior-posterior, artwork, biological, biology, c elegans, caenorhabditis elegans, cell, concentration gradient, concepts, conceptual, development, embryo, embryogenesis, embryology, fauna, green, illustration, localisation, morphogens, nature, nematode, polarity, wildlife, zoological, zoology

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