All vertebrate embryos have a tail and gill slits at some point during embryonic development. What does this suggest about vertebrates?(1 point)
Responses
a. These species share a common ancestor.
b. The embryos of these species require these structures to survive.
c. These species have the exact same DNA sequence.
d. These species evolved in similar environments.
1 answer
a. These species share a common ancestor.
6 answers