Answer to Question #330446 in Genetics for Escape crew

Question

A plant that produces white flowers is crossed with a plant that produces purple flowers. 
Briefly explain what Incomplete dominance and Codominance conditions are. (1)
Describe the phenotype of the heterozygous offspring if the inheritance patterns follow an (2)
Incomplete dominance.Codominance.

Answer 1

Suppose a plant that produces purple flowers has the genotype AA, and a plant that produces white flowers is aa.

Incomplete dominance means the inheritance of a different intensity of a trait depending on the number of dominant alleles. Codominance means the inheritance of two different traits simultaneously in heterozygotes.

When crossing the plants described above, the heterozygotes that will arise in this case will be:

• in case of incomplete dominance – light purple;
• in case of codominance – white-purple.