When is homology not homology? - PubMed

Review

When is homology not homology?

G A Wray et al. Curr Opin Genet Dev. 1998 Dec.

Abstract

Although genes have specific phenotypic consequences in a given species, this functional relationship can clearly change during the course of evolution. Many cases of evolutionary dissociations between homologous genes and homologous morphological features are now known. These dissociations have interesting and important implications for understanding the genetic basis for evolutionary change in morphology.

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