Differential genome duplication and fish diversity

Document Type

Article

Publication Date

12-1-2002

Abstract

The duplication of genes and entire genomes are believed to be important mechanisms underlying morphological variation and functional innovation in the evolution of life and especially for the broad diversity observed in the speciation of fishes. How did these fish species and their genetic diversity arise? The occurrence of three rounds of genome duplication during vertebrate evolution might explain why many gene families are typically about half the size in land vertebrates as they are in fishes. However, mechanisms of genetic diversity in fish lineages need to be further explained. Here we propose that differential genome duplication of from two to six rounds occurred in different fish lines, offering new opportunities during the radiation of fish lineages. This model provides a fundamental basis for the understanding of their speciation, diversity and evolution. © 2002 Kluwer Academic Publishers.

Publication Source (Journal or Book title)

Reviews in Fish Biology and Fisheries

First Page

331

Last Page

337

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