Screening for sex can be done with a cheek swab. It's much, much less invasive than the anti-doping tests that require blood to be extracted and a direct visual

Screening for sex can be done with a cheek swab. It's much, much less invasive than the anti-doping tests that require blood to be extracted and a direct visual on the athlete passing urine. And it only needs to be done once in an athlete's career. In most cases though it's very obvious when a male is in a women's event. For example, no-one is going to mistake this male, who competes in women's cycling, for female: https://i.ibb.co/N6ZBzh4K/F4-Svyxt-XYAAMpc-M.jpg https://i.ibb.co/N6ZBzh4K/F4-Svyxt-XYAAMpc-M.jpg The best athletes often do have some sort of genetic privilege, that is true. But look at the world records of pretty much any sport and compare the most elite male athletes with the most elite female athletes: the difference is massive. Even having advantages in limb length, lung capacity, and so on doesn't overcome the physical advantage of male development.