When one parent with straight hair and one with curly hair have a child with wavy hair, that's an example of incomplete dominance. Eye color is often cited as an example of incomplete dominance.
Explanation:
Incomplete dominance is when a dominant allele, or form of a gene, does not completely mask the effects of a recessive allele, and the organism's resulting physical appearance shows a blending of both alleles. It is also called semi-dominance or partial dominance. One example is shown in roses