Thursday, January 21, 2010

Genetics 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 reveal 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.

I'll post a comment about what the answer is not. See what answer you get first.

1 comment:

John Latto said...

The answer is NOT 1/16. If you got this answer then you are not considering some of the information in the question.