Superfecundation
Superfecundation is fertilization of two or more ova released during the same menstrual cycle by sperm from separate acts of sexual intercourse.
Result: fetuses of different gestational ages.
Types
- Heteropaternal Superfecundation — different fathers.
- Homopaternal Superfecundation — same father.
Medicolegal Importance
- Paternity disputes.
- Twin pregnancies with different fathers.
Superfetation
Superfetation is fertilization and implantation of a second ovum during an already existing pregnancy.
Medicolegal Importance
- Rare phenomenon.
- Important in disputed paternity and legitimacy cases.