Homology (noun) Definition, Meaning & Examples

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noun, plural ho·mol·o·gies.
  1. the state of being homologous; homologous relation or correspondence.
  2. Biology.
    • a fundamental similarity based on common descent.
    • a structural similarity of two segments of one animal based on a common developmental origin.
  3. the similarity of organic compounds of a series in which each member differs from its adjacent compounds by a fixed increment, as by CH2.
  4. a classification of figures according to certain topological properties.
noun plural -gies
  1. the condition of being homologous
  2. the similarities in chemical behaviour shown by members of a homologous series
  3. the measurable likenesses between animals, as used in grouping them according to the theory of cladistics
    Homology (noun) Definition, Meaning & Examples

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