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partial homologyPartialhomologie (ger.)

  • Organs or complex characters being homologous only partially.  

    the lower swollen base of which [viz. the inner lobe or tubercle of an extinct Carnivora] […] may be compared to “a less developed homologue of the inner tubercle in the normal species of Felis.” Dr. Falconer, indeed, repudiates this partial homology

    Owen, R. (1871). On the fossil mammals of Australia, part IV. Dentition and Mandible of Thylacoleo carnifex, with remarks on the arguments for its herbivority. Philos. Trans. Roy. Soc. London 161, 213-266: 252.


    At metaphase I in the hybrid 0-4 bivalents occur, some of which at least are probably held together by interstitial chiasmata. It is assumed that this association is made possible by partial homology of the chromosomes, i.e., some segments of the chromosomes are homologous, while others are not.

    Brink, R.A. (1935). Cytogenetic evolutionary processes in plants. Amer. Nat. 69, 97-14: 107.


    A special case of incomplete homology is partial homology in which an organ of one species corresponds to a part of an organ in another species

    Sattler, R. (1984). Homology: a continuing challenge. Syst. Bot. 9, 382-394: 388; cf. id. (1966). Towards a more adequate approach to comparative morphology. Phytomorphology 16, 417-429: 424-5.