Dr. X
07-12-2007, 07:45 PM
A married couple is screened to assess the risk for Tay-Sachs disease in their children. The activities of hexoaminidase A in the sera of the mother and father are 45% and 55%, respectively, of the reference value. The couple has one child. What is the probability of the child possessing one or more alleles of the Tay-sachs mutation?
A) 0
B) 0.25
C) 0.33
D) 0.5
E) 0.67
F) 0.75
G) 1.0
A) 0
B) 0.25
C) 0.33
D) 0.5
E) 0.67
F) 0.75
G) 1.0