How can a man not reproduce.....
Male infertility can be caused by low sperm production, abnormal sperm function or blockages that prevent the delivery of sperm. Illnesses, injuries, chronic health problems, lifestyle choices and other factors may contribute to male infertility.
Females can also be born without
What is vaginal agenesis? During pregnancy, a baby's reproductive system may not finish developing in the mother's uterus. She may be born without a vagina and have other absent reproductive organs. This condition is called vaginal agenesis.