Pseudoallelism and Gene Evolution

  • E. B. Lewis


It is the purpose of this paper to consider some of the ways in which “pseudoalleles” (McClintock, 1944), or closely linked genes having similar effects, may provide clues to the mode of origin of new kinds of genes.Our underlying thesis will be that in those instances of pseudoallelism in which there is evidence for close functional similarity among the component genes we may come close to seeing the direct results of a process which produces new genes.


Osition Effect 
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© Springer Science+Business Media New York 2004

Authors and Affiliations

  • E. B. Lewis
    • 1
  1. 1.Kerckhoff Laboratories of BiologyCalifornia Institute of TechnologyPasadenaUSA

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