The imperfection is in the genes of males.. not of females... O... females ARE off course imperfect but they do not pass it over. The imperfection is within the seed of males.
Biblical imperfection aside, defective or disruptive genes can be passed on from males and females to their offspring. It is not something that is a singular male function. I can look this up but I don't want to cut and paste right now. I'm sure there are others on this board who have information at the ready to confirm. I hope.