Both people in a married couple carry the recessive gene for cystic fibrosis. When asked about the incidence of any children developing the disorder, what should the nurse respond?
A) "There is no chance.".
B) "There is a 1 in 4 chance.".
C) "There is a 2 in 4 chance.".
D) "There is a 3 in 4 chance.".
B
Feedback:
In autosomal recessive inheritance, the disease will not occur unless both parents have recessive genes for the disorder. There is a 25% chance a child born to the couple will be disease and carrier free; a 50% chance the child will be, like the parents, free of disease but carrying the unexpressed disease gene; and a 25% chance the child will have the disease, or a 1 in 4 chance. With the recessive gene carried by both parents, the chances of children developing the disease are not 2 in 4, 3 in 4, or 0 in 4.
You might also like to view...
You are preparing a report for your med/surg class on the four main inflammatory disorders of the female reproductive system. You are to compare and contrast these disorders
a. What are the organisms involved? b. What is the treatment used? c. What are the signs and symptoms? d. What methods may help in the prevention of reoccurrence?
Family assessment ideally takes place in which of the following places?
a. health care provider's office c. family's church b. child's school d. child's home
The original role of the school nurse was:
a. identifying, educating, and following up on communicable diseases b. developing, teaching, and evaluating a comprehensive health curriculum c. home health visits to the ill child d. assisting the classroom teacher with hygiene teaching
The nurse is preparing to teach a patient who is newly diagnosed with diabetes about medications and blood testing. As the teaching occurs, the nurse knows that effective coping will depend to a great degree on the patient's:
a. Perceived self-efficacy b. External locus of control c. Religious belief systems d. Number of significant others