Size doesn't matter

Mark Q. Martindale () and Matthew J. Kourakis ()
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Mark Q. Martindale: Kewalo Marine Laboratory, Pacific Biomedical Research Center, University of Hawaii
Matthew J. Kourakis: University of Chicago

Nature, 1999, vol. 399, issue 6738, 730-731

Abstract: The Hox genes, which are found in all multicellular animals, can be studied to determine evolutionary relationships. There's an argument that, the more Hox genes an organism possesses, the more sophisticated its body plan can be. Minimal estimates for the number of Hox genes at key points in evolution now suggest that Hox-gene expansion occurred early in the evolution of bilaterally symmetrical animals, well before they diverged into protostomes and deuterostomes.

Date: 1999
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DOI: 10.1038/21530

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