A person has curly hair and a white strand of hair above the forehead – dominant features, straight hair and no curl are recessive.

A person has curly hair and a white strand of hair above the forehead – dominant features, straight hair and no curl are recessive. A father with curly hair and no curl, a mother with straight hair and a white curl above her forehead. All children in this family have signs of a mother. What other children can you expect from this marriage?

Let’s designate the dominant and recessive alleles of the genes: A – curly hair, a – straight, B – the presence of a white strand above the forehead, b – the absence of a white strand. Children from marriage: curly with a white strand above the forehead and straight hair without a white strand in a ratio of 1: 1.