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Medical Term:


Pronunciation: dū′pli-kā′shŭn


  1. A doubling.
  2. Inclusion of two copies of the same genetic material in a genome; an important step in diversification of genomes, as in the evolution of the (nonallelic) hemoglobin chains from a common ancestor.

Synonym(s): gene duplication

[L. duplicatio, a doubling, fr. duplico, to double]

See Also: reduplication