Superfetation -
Superfetation is the fertilization of two ova released in different menstrual cycles. Ovulation is usually suspended during pregnancy time to prevent chance of fertilization of other ova. If an ovum is released after the female was already pregnated, there is a chance of second pregnancy. This is called superfetation. The nidation and development of one fetus over another fetus is theoretically possible until the decidual space is obliterated by 12 weeks of pregnancy.
Superfetation is the fertilization of two ova released in different menstrual cycles. Ovulation is usually suspended during pregnancy time to prevent chance of fertilization of other ova. If an ovum is released after the female was already pregnated, there is a chance of second pregnancy. This is called superfetation. The nidation and development of one fetus over another fetus is theoretically possible until the decidual space is obliterated by 12 weeks of pregnancy.
