Which of the following phenomena is a consequence of independent assortment?

For any gene displaying complete dominance, heterozygous individuals exhibit the dominant phenotype.

Pure breeding plants, when mated with each other, produce completely homozygous offspring.

The phenotypic ratio produced from a F1 × F1 dihybrid cross is 9:3:3:1.

Smooth seed trait is dominant to wrinkled seed trait in peas.