The genital tubercle or “nub” is fetal tissue that can build into a penis or perhaps a clitoris as the pregnancy progresses. Nub theory suggests if you may get a fantastic look at this nub on an ultrasound, you might be able to figure out the intercourse of a fetus https://genderuncover.com/product/cant-wait-for-the-anatomy-scan-get-a-peek-with-potty-shot-confirmation/