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?

Question

Ruby Gillespie

Biology

5 December, 04:55

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?

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Catalina · Answer 1

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.