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Spring Books
Nature 429, 18-19 (6 May 2004) | doi:10.1038/429018a
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Walking on their ribs
Nick Hopwood1
BOOK REVIEWED-Geoffroy Saint-Hilaire: A Visionary Naturalist
by Hervé Le Guyader, transl. Marjorie Grene
University of Chicago Press: 2004. 302 pp. $45, £31.50
In evolutionary terms, the most remarkable discoveries of developmental biology in the 1980s and 1990s were that the molecular mechanisms of anteroposterior axis formation are shared across most of the animal kingdom, and that vertebrates form a dorsoventral axis in a similar way to insects, only upside-down. This axial inversion had a special appeal because it seemed to confirm an old and much-derided view.
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