Can Twins Have Different Fathers? Understanding the Science

The article explains the concept of heteropaternal superfecundation, a rare occurrence where twins can have different fathers. This phenomenon happens when a woman's body releases two separate eggs during her menstrual cycle, which can be fertilized by sperm from two different men within a narrow fertilization window.

The article notes that this situation is incredibly rare, with estimates suggesting it may occur roughly once in a million cases. It highlights the biological possibility of this event, where one egg is fertilized by one sperm and another egg by a different sperm, resulting in twins that may share 100% of their DNA or have distinct racial characteristics.

The article also mentions that families may seek DNA tests to confirm paternity, especially when twins exhibit different skin tones or traits.