I reckon it's 50/50 as it would only be impossible for the new male to be the father if the female had already fertilised her eggs with the first male's sperm... which she doesn't, she just stores it.yhbae said:From what I have learned, the females can carry sperms for up to 6 months. Does this mean even if you introduce a new male, she is not capable of producing offsprings which contain the new male's gene? (Or does that chance become 50%/50%? )