Brown eyes (B) dominate blue eyes (b); black hair (H) dominates blond hair (h). In order to have an offspring ratio of 1/4 brown eyes, black hair, 1/4 brown eyes, blond hair, 1/4 blue eyes, black hair, and 1/4 blue eyes, blond hair, the genotype of the parents would have to be

Question

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The parents must be heterozygous for both traits in order to produce offspring with all four possible phenotypes in a 1:1:1:1 ratio.

Brown Eyes (B) Dominate Blue Eyes (B); Black Hair (H)