Question

All vertebrate embryos have a tail and gill slits at some point during embryonic development. What does this suggest about vertebrates?(1 point)
Responses

These species share a common ancestor.
These species share a common ancestor.

These species evolved in similar environments.
These species evolved in similar environments.

These species have the exact same DNA sequence.
These species have the exact same DNA sequence.

The embryos of these species require these structures to survive.

Answer 1

These species share a common ancestor.

Explanation: Similar embryonic structures (tail and gill slits) are homologous traits inherited from a common ancestor, not evidence that all DNA is identical or that the structures are required for survival.