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Resolving the Hox Paradox

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Science  22 Jun 2001:
Vol. 292, Issue 5525, pp. 2256-2257
DOI: 10.1126/science.1060305

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From DNA to Diversity Molecular Genetics and the Evolution of Animal Design. Sean B. Carroll, Jennifer K. Grenier, and Scott D. Weatherbee. Blackwell Science, Malden, MA, 2001. 230 pp. Paper, $44.95, £33.95. ISBN 0-632-04511-6.

Genomic Regulatory Systems Development and Evolution. Eric H. Davidson. Academic Press, San Diego, 2001. 273 pp. $49.95. ISBN 0-12-205351-6.

The evolution of developmental gene networks is the focus of both of these books. Carroll et al. provide an easy-access introduction to the topic that relies on lessons drawn from a handful of model organisms. Davidson stresses general principles in his less accessible but deeper account, which is aimed at his colleagues in the "evo-devo" field.