A blue-eyed, left-handed woman marries a brown-eyed, right-handed man who is heterozygous for both of histraits. If blue eyes and left-handedness are recessive, how many different phenotypes are possible in their children?

Question

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The children can have four different phenotypes regarding eye color and handedness: blue-eyed and left-handed, blue-eyed and right-handed, brown-eyed and left-handed, and brown-eyed and right-handed. This is because each trait has two possible phenotypes (dominant and recessive), and they assort independently.

A Blue-Eyed, Left-Handed Woman Marries a Brown-Eyed, Right-Handed Man Who