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Dominance and Recessivity

  1. Andrew OM Wilkie

Published Online: 27 JAN 2006

DOI: 10.1038/npg.els.0005475



How to Cite

Wilkie, A. O. 2006. Dominance and Recessivity. eLS. .

Author Information

  1. University of Oxford, Oxford, UK

Publication History

  1. Published Online: 27 JAN 2006


Dominance and recessivity are not intrinsic properties of genes or alleles but describe, in diploid organisms, the pattern of occurrence of a phenotypic trait with respect to the possible combinations of two alleles. If the trait is present in the heterozygote, it is said to be dominant or semidominant, and if it is present only in one of the homozygotes, it is recessive.


  • dominance;
  • semidominance;
  • recessivity;
  • haploinsufficiency;
  • gain of function