Two Plants Are Crossed, Resulting in Offspring with a 3:1

Multiple Choice

Two plants are crossed, resulting in offspring with a 3:1 ratio for a particular trait. What does this suggest?

A) that the parents were true-breeding for contrasting traits
B) that the trait shows incomplete dominance
C) that a blending of traits has occurred
D) that the parents were both heterozygous for a single trait
E) that each offspring has the same alleles for each of two traits