Tetraploidy and the Evolution of the Catostomid Fishes

  • Stephen D. Ferris

Abstract

The catostomid fishes provide an excellent opportunity to follow the evolutionary fates of duplicate genes. The genomes of these fish are still in a state of flux owing to polyploidization some 50 million years ago. The time of origin of these fish is advantageous in understanding the overall picture of genome evolution in eukaryotes. Catostomids, or the suckers, are not so recent in origin that duplicate genes are identical in structure and regulation, yet not so old that most homologies have been erased by the passage of time. This chapter will explore the many facets of tetraploidy as they effect the evolution in the catostomids, and further, to view the catostomids as a model for genome evolution in other taxa, including the early vertebrates. Finally, I will outline directions that promise to be fruitful in extending the model in the future.

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Copyright information

© Plenum Press, New York 1984

Authors and Affiliations

  • Stephen D. Ferris
    • 1
  1. 1.Department of BiochemistryUniversity of CaliforniaBerkeleyUSA

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