Albinism is known to be due to an autosomal recessive mutation. The first child of a couple with normal skin pigmentation was an albino.

Correct Option (b) Reason : Since, albinism is a recessive character, a child will be albino only if it is homozygous for albinism genes. Since, parents have normal skin, it means they are heterozygous. As a result of cross between two heterozygous parents, 25% of the children will be homozygous recessive. The nature of the second child is not affected in any way by the nature of the first child because both are independent events.