Difference between Incomplete Dominance and Codominance

Codominance and Incomplete dominance are two types of genetic inheritance. Codominance essentially means that no allele can block or mask the expression of the other allele. On the other hand, incomplete dominance is a condition in which a dominant allele does not completely mask the effects of a recessive allele. Read on to explore more differences between the two.

Difference between Codominance and Incomplete dominance

Codominance

Incomplete Dominance

Meaning

Two parent phenotypes are expressed together in their offspring.

Two parents blend together to create a new phenotype for their offspring.

Dominance

The two alleles neither act as dominant or recessive over the other.

One allele is not completely dominant over the other.

Other Characteristics

A hybrid will not result in the formation of a new phenotype.

A hybrid will always result in a new phenotype.

Example

Individuals with blood group ABO exhibit Codominance. A and B are dominant in relation to O; however, they are not dominant against each other.

Snapdragon, Antirrhinum majus (pink flowers are the resultant when crossed between a homozygous red flower and a homozygous white flower)

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Frequently Asked Questions on Incomplete Dominance and Codominance

Q1

What is the difference between incomplete dominance and codominance?

Codominance signifies that no allele can block or mask the expression of the other allele. Incomplete dominance signifies the condition in which a dominant allele does not completely mask the effects of a recessive allele.

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  1. It will help me a lot when ever I want to know about something