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homologue



  1. In biology, an homologue is a structure or organ that has the same evolutionary origin as an apparently different structure in another species. For instance, there is little apparent similarity between a horse's leg and a whale's flipper, but both have similar evolutionary history.

  2. In chemistry, an homologue is a member of an homologous series.

Related categories

   • DEVELOPMENTAL BIOLOGY
   • ORGANIC CHEMISTRY