In an in-complete dominance, one allele is not completely show its expression over its paired allele but form an intermediate trait. For an example, when a red flower of snapdragon is crossed pollinated with white flower, the cross results into a pink flower. The pink colored flower indicates in-complete dominance.
If two different alleles for a trait are present and one allele doesn't entirely block the expression of the other, the genetic situation is in-complete Dominance
