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During a prenatal class, a client reports she has an identical twin. What is the classification of twins who share the same chromosomal material?

A.

Fraternal

B.

Dizygotic

C.

Trizygotic

D.

Monozygotic

Answer and Explanation

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.


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Related Questions

Correct Answer is B

Explanation

A. Passageway – Incorrect; the provider states she has a roomy pelvis, meaning the passageway is adequate.

B. Powers – Correct; contractions are infrequent (every 10 minutes), short (30-40 sec), and mild, which may not be strong enough to promote cervical dilation and descent of the fetus.

C. Psyche – Incorrect; the patient is calm and relaxed, which supports labor progression.

D. Passenger – Incorrect; the baby is in an optimal (ROA) position and at +1 station, indicating normal progression.

Correct Answer is D

Explanation

A. Hypnosis, imagery, and slow chest breathing – Incorrect; while these techniques can help with general labor pain, they may not be effective for severe back pain due to fetal positioning.
B. Comfort measures, intermittent labor support by the nurse, and reassurance that the pain is temporary – Incorrect; while support is important, it does not directly relieve back pain.
C. Effleurage, ambulation, and frequent position changes – Incorrect; these may help, but they do not directly address back labor.
D. Counterpressure with a fist or tennis ball to the lower back – Correct; back labor is often caused by occiput posterior fetal positioning, and counterpressure helps relieve pain by applying direct pressure to the sacrum.

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