The nurse is teaching a couple about X-linked disorders. They are concerned that they might pass on hemophilia to their children. What response by the couple indicates the need for further teaching?
A) "The father can't be a carrier if he doesn't have hemophilia."
B) "If the father doesn't have it, then his kids won't either."
C) "If the mother is a carrier, her daughter could be one too."
D) "If the mother is a carrier, her sons may have hemophilia."
Ans: B
Hemophilia is an X-linked recessive disorder. This means that both the father and the mother must have the gene for hemophilia to pass it on to their children. Also, their male children will have hemophilia, while their female children have only a 50% chance of having the disorder. If the father has hemophilia and the mother has hemophilia, their children will have the disease. If the father has hemophilia and the mother is a carrier, all their children have a 50% chance of getting the disease.
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