Question

Three organisms have four shared characteristics. They all have a backbone and scales, lay eggs, and walk on land.

What can be determined based on this information alone?

They are members of different species.
They are members of the same species.
Their common ancestor has the same four shared characteristics.
Their common ancestor has none of the shared characteristics.

Answer 1

Based on this information alone, it can be determined that their common ancestor has the same four shared characteristics.