Answer:
c] A red flower and a yellow flower mating to produce an orange flower.
Explanation:
An incomplete dominance in biological terms means a situation where one allele doesn't totally take the expression in a gene, but rather the two parental traits combine to form a secondary trait. As a result of this, a third phenotype comes up, with the physical trait being a mix of the phenotype of the parents.
Therefore, an example of incomplete dominance is a red flower and a yellow flower mating to produce an orange flower.
