They may have developed an anatomically similar structure as those from the same lineage but the function may well serve for another purpose that suits their ecological niche. Analogous structures are an indication that unrelated species evolve somehow similarly and yet independently.

Why are analogous structures important?

While homologous structures show how similar species have changed from their ancient ancestors, analogous structures show how different species have evolved to become more similar.

Do analogous structures support evolution?

Similar body parts may be homologous structures or analogous structures. Both provide evidence for evolution. ... Analogous structures are structures that are similar in unrelated organisms. The structures are similar because they evolved to do the same job, not because they were inherited from a common ancestor.