Some flowering plants appear to have offspring that have traits that are intermediate between those of the parents. which type of dominance is exhibited by the offspring?
a. complete dominance
b. blended dominance
c. codominance
d. incomplete dominance

The answer is D. Incomplete dominance is a type of middle of the road legacy in which one allele for a particular quality is not totally communicated over its combined allele. This outcomes in a third phenotype in which the communicated physical quality is a blend of the phenotypes of both alleles.

This is the example of incomplete-dominance, which the expression of two allele of a gene pair are completely expressed and an intermediate of the traits is produced in the offspring. The blending of recessive and dominant traits causes production of a thirs new mixed intermediate phenotype.

That would be a working theory.