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Nature 424, 894-895 (21 August 2003) | doi:10.1038/424894a

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Developmental biology: Hotspots for evolution

Michael K. Richardson1 & Paul M. Brakefield1

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Two studies of fruitflies suggest that although development relies on a diverse toolkit of genes, the evolution of physical characteristics might be powered by variation in just a few of these tools.

The physical characteristics of animals evolve because their genes change over successive generations. It is not always clear, though, which genes are involved1, 2.

  1. Michael K. Richardson and Paul M. Brakefield are at the Institute of Biology, Leiden University, PO Box 9516, 2300 RA Leiden, The Netherlands.

Correspondence to: Michael K. Richardson1 e-mail: Email: richardson@rulsfb.leidenuniv.nl

Correspondence to: Paul M. Brakefield1 e-mail: Email: brakefield@rulsfb.leidenuniv.nl