codominant

[koh-dom-uh-nuhnt]
adjective
1.
Ecology. being one of two or more species that are equally dominant in a biotic community: a forest in which oak and hickory are codominant.
2.
Genetics. of or pertaining to two different alleles that are fully expressed in a heterozygous individual.

Origin:
1895–1900; co- + dominant

codominance, noun
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World English Dictionary
codominant (kəʊˈdɒmɪnənt)
 
adj
genetics (of genes) having both alleles expressed equally in the phenotype of the organism
 
co'dominance
 
n

Collins English Dictionary - Complete & Unabridged 10th Edition
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Etymonline
Word Origin & History

codominant
1926, from co- + dominant.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

codominant co·dom·i·nant (kō-dŏm'ə-nənt)
adj.
Of or relating to an equal degree of dominance of two genes, both being expressed in the phenotype of the individual.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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American Heritage
Science Dictionary
codominant   (kō-dŏm'ə-nənt)  Pronunciation Key 
  1. Relating to two alleles of a gene pair in a heterozygote that are both fully expressed. When alleles for both white and red are present in a carnation, for example, the result is a pink carnation since both alleles are codominant.

  2. Being one of two or more of the most common or important species in an ecological community. Like a dominant species, codominant species often influence the presence and type of other species in the community.


The American Heritage® Science Dictionary
Copyright © 2002. Published by Houghton Mifflin. All rights reserved.
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Example sentences
The alleles seems to exhibit a rough codominance, so one can model them as
  additive an independent.
Codominance is a relationship between two versions of a gene.
All alleles exhibited independent action in the pistil, whereas in the pollen
  either dominance or codominance was exhibited.
Codominance of cisplatin resistance in somatic cell hybrids.
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