Resolving the Hox Paradox

Abstract

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.