Using the diagram as a guide, create a Punnett square to show a cross between Jason's father, who has brown hair, and Jason's mother, who has blonde hair (Hint! Jason's father's mother has blonde hair). Explain the process of completing the Punnett square for Jason's parents. Be sure to correctly use the vocabulary terms Punnett square, genotype, phenotype, dominant, recessive, and alleles.

Based on the Punnett square, what is the probability that Jason would have brown hair?