Albinism (lack of skin pigmentation) is caused by a recessive autosomal allele. a man and a woman, both normally pigmented, have an albino child together. the couple decides to have a second child. what is the probability that this child will be albino?
The probability of this couple, both unaffected carriers (heterozygous Aa), having an albino child (homozygous aa) is 1/4 (25%). This is true with each child they have, since the events are independent of each other.
