Journal of Molecular Evolution

, Volume 60, Issue 6, pp 774–785

Protein Evolution in the Context of Drosophila Development


DOI: 10.1007/s00239-004-0241-2

Cite this article as:
Davis, J.C., Brandman, O. & Petrov, D.A. J Mol Evol (2005) 60: 774. doi:10.1007/s00239-004-0241-2


The tempo at which a protein evolves depends not only on the rate at which mutations arise but also on the selective effects that those mutations have at the organismal level. It is intuitive that proteins functioning during different stages of development may be predisposed to having mutations of different selective effects. For example, it has been hypothesized that changes to proteins expressed during early development should have larger phenotypic consequences because later stages depend on them. Conversely, changes to proteins expressed much later in development should have smaller consequences at the organismal level. Here we assess whether proteins expressed at different times during Drosophila development vary systematically in their rates of evolution. We find that proteins expressed early in development and particularly during mid–late embryonic development evolve unusually slowly. In addition, proteins expressed in adult males show an elevated evolutionary rate. These two trends are independent of each other and cannot be explained by peculiar rates of mutation or levels of codon bias. Moreover, the observed patterns appear to hold across several functional classes of genes, although the exact developmental time of the slowest protein evolution differs among each class. We discuss our results in connection with data on the evolution of development.


Expression profile Developmental Constraint Phylotypic stage Nonsynonymous rate Synonymous rate 

Copyright information

© Springer Science+Business Media, Inc. 2005

Authors and Affiliations

  • Jerel C. Davis
    • 1
  • Onn Brandman
    • 2
  • Dmitri A. Petrov
    • 1
  1. 1.Department of Biological ScienceStanford UniversityStanfordUSA
  2. 2.Department of Molecular Pharmacology, W200 Clark, 318 Campus DriveStanford University Medical SchoolStanfordUSA

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