Multiple pregnancy resulting from Feilization of two ova discharged from ovary at different periods of ovulation is best termed as:
**Core Concept**
Multiple pregnancy can result from the fertilization of multiple ova, each released at different times of ovulation. In such cases, the multiple pregnancy is not a result of one ovum splitting, but rather the fertilization of multiple eggs.
**Why the Correct Answer is Right**
The correct term for this phenomenon is **heterotopic dizygotic twins**. This occurs when two separate ova, each released at a different time of ovulation, are fertilized by two different sperm. The fertilized ova then implant in the uterus, resulting in a multiple pregnancy. This type of multiple pregnancy is distinct from monozygotic twins, which result from the splitting of a single fertilized ovum.
**Why Each Wrong Option is Incorrect**
* **Option A:** This option is not relevant to the concept of multiple pregnancy resulting from the fertilization of multiple ova.
* **Option B:** This option refers to a different type of multiple pregnancy, where a single fertilized ovum splits to form two embryos.
* **Option D:** This option is not a recognized term in the context of multiple pregnancy.
**Clinical Pearl / High-Yield Fact**
It's essential to understand the different types of multiple pregnancies, as each has distinct implications for maternal and fetal outcomes. Heterotopic dizygotic twins, in particular, may have a higher risk of complications due to the different gestational ages of the fetuses.
**Correct Answer:** C. Heterotopic dizygotic twins