Larvae and evolution : toward a new zoology
著者
書誌事項
Larvae and evolution : toward a new zoology
Chapman and Hall, 1992
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注記
Bibliography: p. 199-206
Includes index
内容説明・目次
内容説明
This is an explanation of the major anomalies between adults and their larvae in many groups of animals, presenting evidence for a non-Darwinian type of evolution taking place alongside Darwinian evolution. The author's thesis is that at various points in the evolutionary time - quite rarely, but often enough to effect major changes in the direction of evolution - organisms captured genes from distantly related organisms. These genes were then incorporated into the genomes of the host organisms, where they are expressed in larval or juvenile stages, but not in adults. These are explained by presenting a number of widely known and otherwise unfathomable incongruities between larval stages and corresponding adults.
目次
Evolution, relationships and larvae. Crustaceans with incongruous larvae. Echinoderms and their larvae. The affinities of echinoderms. The metamorphosis of echinoderms. The relationship between sea-urchins and brittle-stars. Echinoderms through the ages. The trochophorate phyla. The near-trochophorate phyla. Gene transfer. Testing the theories. Implications.
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