One woman got a surprise of a lifetime after a New Jersey judge ruled in court that her twin daughters have two different fathers. According to the New York Daily News, the Passaic County Superior Court Judge ruled on the paternity case after reviewing DNA test results.
The woman was in court seeking child-support payments from the man she believed to be the father of both children.
Although rare, it turns out that having twins by two men is not impossible. If the woman has intercourse with two men during a single menstrual cycle, and two eggs are fertilized separately from each man, then the ensuing children would be half-siblings.
According to the court documents, the mother—identified by the initials “T.M.”—gave birth to the half-sisters in January 2013, and believed that a man identified only as “A.S.” to be the father of both children when she applied for child support.
Social services requested paternity testing after the woman admitted to sleeping with another man the same week she conceived the twins.
DNA tests concluded that there was a 99.9% chance that the two eggs were fertilized from different fathers in this instance.