@mdthornb, do you have any of your questions for this ?As a former science teacher, I can tell you that the science of sex is very cut and dried. What isn't is gender which has become a political football. Sex is what matters in sports because of the physical aspect to it. People born male have an inherent advantage in many sports. Is there a sport for both sexes where the women's world record exceeds the men's? Perhaps we should just make sports like basketball coed. That would be both a real hoot and a political shi*storm.