When 2 Alleles Are Codominant?

Codominance, in genetics, phenomenon in which two alleles (different versions of the same gene) are expressed to an equal degree within an organism. As a result, traits associated with each allele are displayed simultaneously. An example of codominance is seen in the MN blood group system of humans.

What will a heterozygote show when two alleles are codominant?

For a codominant trait, a heterozygous organism will actually express both alleles. This means that the distinct phenotypes produced by each allele can both be observed. ... Neither allele is truly dominant, and the result is an entirely different phenotype.

What are the two codominant alleles?

Codominance means that neither allele can mask the expression of the other allele. An example in humans would be the ABO blood group, where alleles A and alleles B are both expressed. So if an individual inherits allele A from their mother and allele B from their father, they have blood type AB.