What traits do not have complete dominance?

Answer 1

An example of incomplete dominance in humans is nose size. If you cross a person with a large nose, with someone with a small nose then the child may have a medium nose. This happens because neither trait dominates the other.

Answer 2

Actually, this is incorrect. Sickle Cell Anemia is an example of codominance. Being homozygous Dominant gives you 100% normal cells, Heterozygous is half normal and half sickle cell and being homozygous recessive gives you all sickle cells. In this case being a Homozygote gives rise to homozygous advantage since they will be resistant to malaria and not suffer from decrease blood flow.

A better example of Incomplete dominance is seen with individuals with curly hair. If they have children with someone who has straight hair, the result will be an individual with hair that is intermediate between these two phenotypes.

In Sickle Cell anemia, a person who is heterozygous for the disease has mildly deformed red blood cells. An intermediate phenotype between round and sickle.

Answer 3

hair type. For example, straight hair vs. curly hair = wavy hair

Answer 4

I'm not certain, but I think that intermediate skin color in biracial children would be an example of incomplete dominance.