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Superfecundation is the fertilization of two or more ova from the same cycle by sperm from separate acts of sexual intercourse, which can lead to twin babies from two separate biological fathers.[1][2] The term superfecundation is derived from fecund, meaning able to produce offspring. Homopaternal superfecundation is fertilization of two separate ova from the same father, leading to fraternal twins,[3] while heteropaternal superfecundation is a form of atypical twinning where, genetically, the twins are half siblings – sharing the same mother, but with different fathers.
- ^ Worland, Justin (May 8, 2015). "The Science of How Women Can Have Twins With 2 Different Fathers". Time. Retrieved March 23, 2017.
- ^ "Public Education Pamphlets". sogc.org.
- ^ Ambach, E; Parson, W; Brezinka, C (2000). "Superfecundation and dual paternity in a twin pregnancy ending with placental abruption". Journal of Forensic Sciences. 45 (1): 181–3. doi:10.1520/JFS14656J. PMID 10641935.