A female can have more than one baby daddie ( pardon the expression) per litter. One sperm has to meet one egg. A female BP produces many eggs so they can be fertilised by more than one male. This happens in a lot of animals puppies from the same litter can have more than one sire. A human can even have twins by two different men. It just depends on how many partners she has when she's fertile, and whos swimmers get to the egg.
Really??? Wow...Can't imagine what kind of havoc it will cause....