Question

All vertebrate embryos have a tail and gill slits at some point during embryonic development. What does this suggest about vertebrates?
These species evolved in similar environments
The embryos of these species require these structures to survive.
These species have the exact same DNA sequence.
These species share a common ancestor.

Answer 1

These species share a common ancestor.

Answer 2

I hate evolution

Answer 3

Some fish grew legs and walked out of the ocean so I could fail algebra

Answer 4

Wrong

Answer 5

ur mother

Answer 6

The answer was A: These species share a common ancestor.