In both codominance and incomplete dominance, both alleles for a trait are dominant. In codominance a heterozygous individual expresses both simultaneously without any blending. An example of codominance is the roan cow which has both red hairs and white hairs.
Codominance is a relationship between two versions of a gene. Individuals receive one version of a gene, called an allele, from each parent. If the alleles are different, the dominant allele usually will be expressed, while the effect of the other allele, called recessive, is masked.
First let me point out that the meaning of the prefix "co-" is "together".
Cooperate = work together. Coexist = exist together. Cohabitat = habitat together.
Have we got it together?
In this case, both alleles are dominant.
They are independent, so there is no 'blending' as in the snapdragons, instead the phenotype is a result of the full expression of both alleles.
Codominance Defined for pairs of alleles. The situation in which an animal heterozygous for two alleles (A1 and A2 at the A locus) expresses both of the phenotypes observed in the two corresponding homozygotes.
The observation of a phenotype caused by independent expression of both alleles of a gene in a diploid.
The three consecutive nucleotides (triplets) in DNA or RNA that encode a particular amino acid or signal the termination of polypeptide synthesis.
~ A type of inheritance in which heterozygotes fully express both alleles.
codon A sequence of three nucleotides in messenger RNA that codes for a single amino acid.
A phenotypic situation in which both alleles are expressed in the heterozygote.
~: Equal effect on the phenotype of two alleles of the same locus (as opposed to recessive and dominant).
Codon bias: Although several codons code for a single amino acid, an organism may have a preferred codon for each amino acid. This is called codon bias.
Situation in which two different alleles for a genetic trait are both expressed.
See also: autosomal dominant, recessive gene
The property of an allele of a given gene, that can be setected in a heterozygote.
The term coined by Bateson and Saunders (1902) for characters which are alternative to one another in Mendelian inheritance (Gk. Allelon, one another; morphe, form).
~ A condition in which both alleles of a heterozygous pair are expressed independently.
codon A sequence of three bases on messenger RNA that specifies the position of an amino acid in a protein.
[cloning DNA] [cloning animals] Clonus Clostridia Clotting (coagulation) of blood CMA-676 Cnidaria Cocaine Cochlea Cockayne's syndrome CodominanceThe independent expression of each of two alleles in a heterozygote.
The ABO blood group is a good example of codominance and multiple alleles. There are three allele that control the ABO blood groups. If there are more than two allele of a gene then they are called multiple allele.
In another type of allelic relationship, termed codominance, the heterozygote produces a phenotype that incorporates both phenotypes of the homozygotes. A codominant relationship between alleles is often more apparent at the cellular or molecular level.
The inheritance pattern of the MN blood system is autosomal with codominance, a type of lack of dominance in which the heterozygous manifests a phenotype totally distinct from the homozygous. The possible phenotypical forms are three blood types: type M blood, type N blood and type MN blood.
The relative effects of two alleles range from complete dominance of one allele, through incomplete dominance of either allele, to codominance of both alleles.
It is important to recognize that a dominant allele does not somehow subdue a recessive allele.
Extended expression patterns seen in diploid organisms include facets of incomplete dominance, codominance, and multiple alleles .
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called dominant as its qualities dominate the phenotype of the organism, while the other allele is called recessive as its qualities recede and are not observed. Some alleles do not have complete dominance and instead have incomplete dominance by expressing an intermediate phenotype, or codominance ...
See also: What is the meaning of Allele, Alleles, Phenotype, Gene, Chromosome?