They swallow their prey whole, and they don’t have large gill slits to vent out water in their mouth, so they have secondary set of jaws to pull food into the throat.
If you really want to get impractical, we breath and eat through the same tube, and that causes all kinds of problems.
As explained to me by my high school biology teacher the reason men have nipples is because nipples are formed earlier in the development process than gender is.
Ok but what evolutionary purpose does this have? It seems just impractical at best
They swallow their prey whole, and they don’t have large gill slits to vent out water in their mouth, so they have secondary set of jaws to pull food into the throat.
If you really want to get impractical, we breath and eat through the same tube, and that causes all kinds of problems.
Evolution isn’t a directed process, so there’s no “purpose”. I, a male, have nipples. What evolutionary purpose does that have?
As explained to me by my high school biology teacher the reason men have nipples is because nipples are formed earlier in the development process than gender is.
That still isn’t a purpose, but I guess a better example would be something that’s useless to everybody. Like wisdom teeth.