Rumor has it original translations more closely correlate “rib” to “baculum” - partially as a way to describe why other mammals have them and humans don’t (because it was removed from Adam), and also to better describe the intention of the relationship God intended for the two of them. But then as the story was translated and edited over and over again, they needed to “clean it up”

One must wonder about male and female invertebrates next

Nah, silly questions will just get you silly answers. Silly beliefs actually just don’t deserve your time.