34 Fertilization of two ova released in different menstrual cycle is known as
A. Superfetation
B. Superfecundation
C. Fetus papyraceous
D. None of above
Currect Answer: Superfetation
Explanation
Fertilization of two ova released in different menstrual cycles is called Superfetation.
• Superfetation – occurs when a second ovum is released and fertilized during an ongoing pregnancy (a different menstrual cycle).
• Superfecundation – fertilization of two ova released in the same cycle, possibly by different acts of intercourse.
Other Options Details
Here is the detailed description of all the given options:
A. Superfetation
Superfetation is a rare phenomenon in which a second ovum is released, fertilized, and implanted in the uterus when a woman is already pregnant. This results in the development of two fetuses at different stages of gestation inside the uterus. The babies may have noticeably different maturity levels or sizes at birth. This condition usually requires the presence of a second ovulation cycle during early pregnancy, which is very uncommon because hormonal changes generally prevent further ovulation after conception.
B. Superfecundation
Superfecundation refers to the fertilization of two ova released during the same menstrual cycle by sperm from either the same or different sexual partners. If sperm from two different men fertilize each ovum, it is called heteropaternal superfecundation, meaning twins with different fathers. This condition results in fraternal (dizygotic) twins but conceived at the same time cycle, unlike superfetation.
C. Fetus papyraceous
Fetus papyraceous is a condition seen in multiple pregnancy (twins or more) in which one fetus dies in the uterus early in pregnancy and gets compressed due to pressure from the surviving fetus and uterine walls. The dead fetus becomes flattened like paper—hence the term papyraceous meaning paper-like. It is often discovered during delivery or through ultrasound. The surviving baby typically continues to develop normally.
D. None of the Above
This option is selected when none of the given answers correctly match the definition or question. It is included to allow for cases where the correct response is not present among the provided options.
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Writer: Vandita Singh, Lucknow (GS India Nursing Group)