A plant with red flowers crosses with another plant of the same species that has white flowers. Flower color in this plant is the result of a single gene. All of the offspring have pink flowers. This is an example of which of the following?

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Incomplete dominance is a type of inheritance in which one of the alleles for a specific trait is not fully expressed over the other. This results in a third phenotype where the physical trait is a combination or blend of both alleles. In this case, the flowers are pink because they are a combination of the alleles for red and white flowers.
When two alleles for a trait are equally expressed, with neither being recessive or dominant, it creates codominance. Examples of codominance include a person with type AB blood, which means that both the A allele and the B allele are equally expressed.
The Principle of Independent Assortment describes how different genes independently separate from one another when reproductive cells develop.
Epistasis is the phenomenon where the effect of one gene is dependent on the presence of one or more 'modifier genes'. Originally, the term meant that the phenotypic effect of one gene is masked by a different gene.

A Plant with Red Flowers Crosses with Another Plant of the Same