Question

How can we tell that two species shared a common ancestor, and are therefore related?

Answer 1

Step-by-step explanation:

There are multiple ways you can tell

you can look at the bone structure of an organism and see if it's homolougous

Or use a cladogram to tell what species share a common ancestor ( hope this helps)

Answer 2

Homologous structures provide evidence for common ancestry, while analogous structures show that similar selective pressures can produce similar adaptations (beneficial features). Similarities and differences among biological molecules