Incomplete dominance

incomplete dominance
a situation in which neither of two genic factors completely dominates the other
Source: Noland, George B. 1983. General Biology, 11th Edition. St. Louis, MO. C. V. Mosby ...
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Incomplete dominance is a condition when neither allele is dominant over the other. The condition is recognized by the heterozygotes expressing an intermediate phenotype relative to the parental phenotypes.
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Incomplete dominance
The heterozygote has a different, intermediate phenotype compared to the homozygous dominant or homozygous recessive individuals.
Related Terms: Heterozygote ...
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incomplete dominance
A type of inheritance in which F1 hybrids have an appearance that is intermediate between the phenotypes of the parental varieties.
incomplete flower ...
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incomplete dominance An interaction between alleles in which both alleles are expressed more or less equally, and the phenotype of the heterozygote is different from either homozygote.
incomplete dominance See intermediate inheritance.
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incomplete dominance: an allele combination in which two characteristics blend and both alleles can express themselves; one example is red, white, and pink snapdragons.
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One exception is incomplete dominance. Another exception is "codominance", where both alleles are active and both traits are expressed; for example, both red and white petals. Codominance is also apparent in human blood types.
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(See Oncogene.) Incomplete dominance. A condition where a heterozygous off- spring has a phenotype that is distinctly different from, and intermediate to, the parental phenotypes. See Heterozygote, Phenotype. Initiation codon.
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One exception is incomplete dominance (sometimes called blending inheritance) when alleles blend their traits in the phenotype.
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Codominance is different than Incomplete dominance (blending).
Pleiotropy
Genes that affect more than one trait are called pleiotropic.
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Extended expression patterns seen in diploid organisms include facets of incomplete dominance, codominance, and multiple alleles.
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See also ...
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Incomplete dominance appears as a blend of the phenotypes corresponding to the two alleles (like pink petals as opposed to red or white). In co-dominance, both alleles equally contribute to the phenotype (red and white petals occur together).
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