Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A condition in which both alleles of a gene pair in a heterozygote are fully expressed, with neither one being dominant or recessive to the other.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A condition in which both alleles of a gene pair in a heterozygote are fully expressed, with neither one being dominant or recessive to the other.

Etymologies

co- +‎ dominance (Wiktionary)

Examples

  • Dominance is not the most frequent type of Mendelian inheritance; in fact it is the exception, not the rule, with codominance occurring twice as often as dominance.

    How to teach about dominance

  • And yet, we teach dominance first and then codominance, incomplete dominance and the rest as the exceptions.

    How to teach about dominance

  • But we like the genetic principle of codominance; and of course hybrid vigor.

    BioMed Central - Latest articles

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