Incomplete dominance and codominance are two kinds of inheritance in which one allele (a gene form) isn’t totally dominant over the other. A new phenotype emerges as a result of this (the physical characteristics of an individual).
Incomplete dominance
When the two alleles are mixed together, a third phenotype emerges that isn’t like either of the parents. Height and hair color are two common instances of insufficient dominance. Offspring will most likely not be the same height or hair color as one of their parents but will be a mix of the two.
Codominance
Both alleles are expressed in the child in a codominant situation. Unlike partial dominance, where the two-parent phenotypes are combined into a new phenotype, with codominance, both parent phenotypes appear on the offspring at the same time.
Key differences
1. Meaning
Two-parent phenotypes are expressed concurrently in their offspring in Codominance.
Incomplete Dominance occurs when two parents combine to produce a different phenotype for their offspring.
2. Dominance
In Codominance, the two alleles do not behave as dominant or recessive over each other.
Incomplete Dominance occurs when one allele is not totally dominant over the other.
3. Effect
Both alleles mix equally well and pass on their qualities to their offspring, in codominance.
Both alleles mix in the progeny, but only one of them is apparent in incomplete dominance
4. Additional Features
In the case of codominance, a hybrid will not produce a new phenotype.
Incomplete dominance is always the consequence of a hybrid.
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