Homeobox genes, fossils, and the origin
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Schwartz, Jeffrey H.
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Article
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1999
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John Wiley and Sons
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English
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Ever since Darwin there has been a history of debate on the tempo and mode of evolution. Is speciation a gradual process involving the accumulation of minute variations extant within a species, or is it rapid, the result of major organismal reorganization? Does one define a species on the basis of g