A blonde woman whose parents had dark hair marries a dark-haired man whose parents also had dark hair and whose sister is blonde.

A blonde woman whose parents had dark hair marries a dark-haired man whose parents also had dark hair and whose sister is blonde. From this marriage, five dark-haired children are born. Determine: 1) which feature is dominant; 2) genotypes of all family members.

1) The dominant feature is dark hair color;
2) if the dominant trait is designated by the letter A, then the genotype of the woman is aa, her parents are Aa, the man (most likely) is AA, his parents are Aa, his sister is aa, his children (most likely) is Aa.

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