XXX: A lot of guesses, no one conclusion. Know that a man has no baculum because Eve was made of it. And now scientifically: as you know, modern man appeared due to the intersection of the crooman (unfortunately, there were no Neanderthals in that area or they were too polite) and the female crew of the interplanetary ship. Since their development was higher, they tried to produce female offspring (all women on their planet). But the hormones of our ancestors were stronger. Therefore, as is known, the embryo is always first female, with a female whisper, which then grows (a scar between the ass and the eggs). Therefore, we have nowhere to take a baccalaureate. If it did not break the ship, it would.

ZZZ: Finally adequate theories, or have gotten with their evolution.