Interesting case:
http://www.ctvnews.ca/health/twin-girls-have-different-dads-judge-finds-1.2365365
I did not know that this was possible.
http://www.ctvnews.ca/health/twin-girls-have-different-dads-judge-finds-1.2365365
A judge ruled Monday in a paternity case that the man from whom the twins' mother sought child support has to pay for only one of the children. A DNA test showed that he was almost certainly the father of one twin but wasn't the father of the other.
It's rare for a woman to give birth to twins with different fathers. Passaic County Superior Court Judge Sohail Mohammed wrote in his opinion that he found two other court cases nationally on such matters.
It can happen when the woman has sexual intercourse with two men in the same menstrual cycle and two of her eggs are fertilized separately by each man.
I did not know that this was possible.