The nurse is presenting a conference on gene dominance. What does the nurse report as the percentage of children carrying the dominant gene if one parent has a dominant gene and the other parent does not?

25%

50%

75%

100%

Answer and Explanation

The Correct Answer is B

A. If only one parent carries the dominant gene, the probability of a child inheriting it is not 25%, as this would imply a recessive-recessive pairing.

B. In a scenario where one parent is heterozygous for a dominant gene and the other has two recessive alleles, each child has a 50% chance of inheriting the dominant gene. This outcome is based on Mendelian inheritance.

C. A 75% chance would occur in a scenario involving two heterozygous parents, which is not described here.

D. 100% inheritance occurs only when one parent is homozygous dominant, which is also not indicated in this case.

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Correct Answer is C

Explanation

A. A decrease in saliva production may aggravate the disorder is not correct. In fact, hyperemesis gravidarum is often associated with an increase in saliva production (ptyalism) rather than a decrease.

B. Decreasing gastric secretions lead to increased nausea is inaccurate. The issue in hyperemesis gravidarum is typically an increase in nausea and vomiting, not a direct link to decreased gastric secretions.

C. An increase in human chorionic gonadotropin (hCG) levels may contribute to this disorder is correct. Elevated hCG levels are thought to play a role in the development of hyperemesis gravidarum, as they may contribute to increased nausea and vomiting.

D. Symptoms begin and are most severe during the second trimester of pregnancy is incorrect. Hyperemesis gravidarum typically starts in the first trimester and can persist beyond that if not managed. Symptoms do not usually peak in the second trimester.

A. "Don't worry, I will stay in there with you for the exam." B. "A pelvic exam is required if you want birth control pills.” C. "Tell me more about your concerns.” D. "All you need to do is relax during the exam.”

Correct Answer is C

Explanation

A. Offering to stay with the client may be supportive, but it does not directly address the client’s expressed feelings or concerns, which is the priority in therapeutic communication.

B. Telling the client that the exam is necessary for birth control may seem dismissive and does not validate or explore her anxiety.

C. Encouraging the client to share more about her concerns is an appropriate therapeutic response. It allows the nurse to understand the client’s feelings, provide reassurance, and educate her about the procedure.

D. Advising the client to relax may come across as minimizing her feelings and does not provide an opportunity for the client to express her anxiety.

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The nurse is presenting a conference on gene dominance. What does the nurse report as the percentage of children carrying the dominant gene if one parent has a dominant gene and the other parent does not?

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Naxlex Comprehensive Predictor Exams

A nurse is reinforcing teaching of a newly licensed nurse about hyperemesis gravidarum. Which of the following statements by the newly licensed nurse indicates the reinforced teaching was effective?

Correct Answer is C

Explanation

A nurse is caring for a female client who is scheduled to have a pelvic examination. The client tells the nurse, "I'm really nervous because I've never had a pelvic exam before." Which of the following is an appropriate therapeutic response by the nurse?

Correct Answer is C

Explanation

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The nurse is presenting a conference on gene dominance. What does the nurse report as the percentage of children carrying the dominant gene if one parent has a dominant gene and the other parent does not?

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