 [ Symptoms ] does having one testicle cause having one sex of offspring my wife and i want to have a girl we have two boys i have one testicle and it is not undesended and has been searched for as a child and adult is it possible that one testes is related to one specific sex of child [ Disease ] no sperm containing male and female chromosomes are made in each testicle so you still have a 50 chance of having a boy or girl unless you adopt a child