Your parents are both heterozygous for the recessive disorder phenylketonuria (PKU). What is the

probability that you will have the disorder?



a. 25% regardless of the health of your 3 siblings
b. 50% no matter whether or not you have siblings
c. 75% no matter whether or not you have siblings
d. 100% even if you are an only child
e. 25% but only if your three siblings are healthy.


A

Biology & Microbiology

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