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

The embryos of these species require these structures to survive.
The embryos of these species require these structures to survive.

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.

Answer 1

These species share a common ancestor.

Explanation: Similar embryonic structures (like tails and gill slits) are homologous traits that indicate common ancestry, not identical DNA or current requirement for survival.