During a prenatal class, a client reports she has an identical twin. What is the classification of twins who share the same chromosomal material?
Fraternal
Dizygotic
Trizygotic
Monozygotic
The Correct Answer is D
A. Fraternal – Incorrect; fraternal twins develop from two separate eggs and sperm and do not share identical genetic material.
B. Dizygotic – Incorrect; dizygotic twins are fraternal twins with different genetic makeup.
C. Trizygotic – Incorrect; trizygotic refers to triplets, not twins.
D. Monozygotic – Correct; monozygotic twins result from one fertilized egg that splits, leading to identical genetic material.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. Feel for a full bladder. – Incorrect; a full bladder can contribute to postpartum bleeding, but checking fundal firmness should be prioritized first.
B. Request the provider perform a vaginal examination. – Incorrect; the nurse should assess the fundus and attempt interventions first before calling the provider.
C. Check the client’s fundus. – Correct; the priority action is to assess the fundus for firmness, as a boggy uterus is the most common cause of postpartum hemorrhage.
D. Measure the client’s vital signs. – Incorrect; while vital signs are important, assessing fundal tone and initiating interventions come first.
Correct Answer is A
Explanation
A. Lightening – Correct; "lightening" occurs when the fetal head descends into the pelvis, reducing pressure on the diaphragm, making it easier to breathe.
B. Decreasing chest diameter – Incorrect; the chest diameter does not decrease; instead, the diaphragm moves upward due to uterine growth.
C. Decreased carbon dioxide production – Incorrect; CO₂ production remains stable during pregnancy.
D. Hyperventilation – Incorrect; while pregnancy increases respiratory effort, the client is experiencing relief, not hyperventilation.
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