Karen and Steve each have a sibling with sickle-cell
Chapter 14, Problem 14.31(choose chapter or problem)
Karen and Steve each have a sibling with sickle-cell disease. Neither Karen nor Steve nor any of their parents have the disease, and none of them have been tested to see if they have the sickle-cell trait. Based on this incomplete information, calculate the probability that if this couple has a child, the child will have sickle-cell disease.
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