Which statement is correct? All vertebrate and embryos have ears? Or all vertebrae embryos have tails? Or all vertebrae embryos have legs? Or all vertebrae embryos have hair?
The statement "all vertebrate embryos have tails" is correct. During early development, all vertebrate embryos have a tail-like structure, which may be more pronounced in some species than others. Eventually, this structure either regresses or develops into the tail of the fully formed animal.
