Theoretical Approaches to the Analysis of Homeobox Gene Evolution

The homeobox gene system presents a unique model for experimental and theoretical analyses of gene evolution. Homeobox genes play a role in patterning the embryonic development of diverse organisms and as such are likely to have been fundamental to the evolution of the specialized body plans of many animal species. The organization of Hox-genes in chromosomal, clusters in many species implicates gene duplication as a prominent mechanism in the evolution of this multigene family. I review here various theoretical analyses that have contributed to our understanding of the molecular evolution of this class of developmental control genes. This article also illustrates relationships between theoretical predictions and experimental studies and outlines future avenues for the evolutionary analysis of developmental systems.

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