A woman is a natural blonde and her husband has black hair. All their children have black hair. Why do you think that the blonde hair did not appear in any of the children?

The blonde hair likely did not appear in any of the children because it was the recessive trait.

Explanation:

Recessive traits are ones that do not manifest themselves, while dominant traits are the ones that do. Therefore, the woman's blonde hair was probably recessive while the man's black hair was dominant.

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