Homonomy


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Related to Homonomy: homonymy, Homonyms

Homonomy

 

the arrangement of similar parts of an organism around its transverse axis or along the axis of a particular organ. Such parts as the rays of fins, digits, feathers, and flower petals were called homonomous or parameral by the German biologist E. Haeckel. Also thus designated are the homogenous body segments of arthropod animals. (Heterogenous segments are called heteronomous.) Homonomy is a particular case of homology.

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This would also apply to the individual chromosomes of a pair, as suggested by Moritz and Hillis (1996: 9): "In cytogenetics, it is standard to refer to the respective chromosomes in a chromosome pair of a diploid organism as homologs and to refer to the homologous pair of chromosomes in another species as homeologs, even though this is quite different from the use of homology in classical morphology (where homonomy is used to refer to a repeated structure in a single organism).