Awoman, penelope, has a sister with polycystic kidney disease (arpkd), which is inherited in an autosomal recessive mode. penelope does not have the disease, and both of her parents do not have arpkd. penelope marries a man from europe who does not have arpkd. there is no information about whether this disease runs in his family, but 95% of the population does not have arpkd (assume the disease is in hardy-weinberg equilibrium). what is the probability that they will have a child with arpkd?
a) 0.25
b) 0.15
c) 0.05
d) 0.04
e) there is not enough information to answer this question