15. Albinism, lack of pigmentation in humans, results from an autosomal recessive gene designated a. Two parents with normal pigmentation have an albino child. What is the probability that their next child will be albino? What is the probability that the next child will be an albino girl?

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asked 12 years ago in Biology by anonymous

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Flat feet is a recessive trait. Butch and Blanche are about to have their first child. They both have "normal" feet but Blanche's father has flat feet and Butch has a child from a previous marriage who has flat feet. What is the probability that they will have a girl with normal feet?

asked 12 years ago in Biology by anonymous

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asked 12 years ago in Biology by anonymous

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In the previous question, Barney and Betty learn that they will actually have twins - dizygotic twins (from two different eggs). What is the probability that they will have both a boy and a girl, both of whom are flat-footed?

asked 12 years ago in Biology by anonymous

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A certain type of congenital deafness in humans is caused by a rare autosomal dominant gene. In mating involving deaf man and a deaf woman (heterozygous) would you expect all the children be deaf?

asked 12 years ago in Biology by anonymous