Answer
Incomplete dominance is a condition in which the putative dominant gene of a pair of alleles for a trait is not completely dominant over the putative recessive gene The result is that a heterozygote genotype for this locus is expressed not as completely dominant phenotype, but as a phenotype intermediate in characteristics( dimensions or quality) between the expression of the dominant variant allele and the recessive allele .
Work Step by Step
Sickle cell disease is an example of a condition that demonstrates incomplete dominance. Tay Sack's Disease and pitch of the male voice are possibly other
cases in which there is incomplete expression of dominance.