Final answer:
Incomplete dominance occurs when some individuals fail to show the phenotype associated with a trait. This pattern of inheritance is characterized by a heterozygous genotype that creates an intermediate phenotype.
Step-by-step explanation:
Incomplete dominance occurs when some individuals fail to show the phenotype associated with a trait. This pattern of inheritance is characterized by a heterozygous genotype that creates an intermediate phenotype. For example, in snapdragons, when red-flowered plants and white-flowered plants are crossed, the offspring have pink flowers, which is an intermediate phenotype between red and white.