Document Detail

Sexual selection at the protein level drives the extraordinary divergence of sex-related genes during sympatric speciation.
MedLine Citation:
PMID:  11600080     Owner:  NLM     Status:  MEDLINE    
An increasing number of molecular studies are indicating that, in a wide variety of species, genes directly related to fertilization evolve at extraordinarily high rates. We try to gain insight into the dynamics of this rapid evolution and its underlying mechanisms by means of a simple theoretical model. In the model, sexual selection and sympatric speciation act together in order to drive rapid divergence of gamete recognition proteins. In this process, intraspecific competition for fertilizations enlarges male gamete protein variation by means of evolutionary branching, which initiates sympatric speciation. In addition, avoidance of competition for fertilizations between the incipient species drives the rapid evolution of gamete recognition proteins. This mechanism can account for both strong stabilizing selection on gamete recognition proteins within species and rapid divergence between species. Moreover, it can explain the empirical finding that the rate of divergence of fertilization genes is not constant, but highest between closely related species.
G S Van Doorn; P C Luttikhuizen; F J Weissing
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Proceedings. Biological sciences / The Royal Society     Volume:  268     ISSN:  0962-8452     ISO Abbreviation:  Proc. Biol. Sci.     Publication Date:  2001 Oct 
Date Detail:
Created Date:  2001-10-15     Completed Date:  2002-01-25     Revised Date:  2010-09-14    
Medline Journal Info:
Nlm Unique ID:  101245157     Medline TA:  Proc Biol Sci     Country:  England    
Other Details:
Languages:  eng     Pagination:  2155-61     Citation Subset:  IM    
Department of Genetics, University of Groningen, PO Box 14, 9750 AA Haren, The Netherlands.
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MeSH Terms
Evolution, Molecular*
Fertilization / genetics*
Invertebrates / genetics
Models, Biological
Proteins / genetics*
Selection, Genetic*
Sex Characteristics
Species Specificity
Sperm-Ovum Interactions
Reg. No./Substance:

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