Meaning of homologous


Pronunciation: (hu-mol'u-gus, hō-), [key]
— adj.
  1. having the same or a similar relation; corresponding, as in relative position or structure.
  2. corresponding in structure and in origin, but not necessarily in function: The wing of a bird and the foreleg of a horse are homologous.
  3. having the same alleles or genes in the same order of arrangement: homologous chromosomes.
  4. of the same chemical type, but differing by a fixed increment of an atom or a constant group of atoms: Methyl and ethyl alcohols are homologous.
  5. pertaining to an antigen and its specific antibody.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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