Final answer:
The offspring of a red and white snapdragon being pink is an example of incomplete dominance.
Step-by-step explanation:
The offspring of a red and a white snapdragon being pink is an example of incomplete dominance. In incomplete dominance, neither allele is dominant, and the heterozygous individual displays an intermediate phenotype. This means that the offspring inherit both the red and white alleles from their parents, resulting in pink petals for the snapdragons.