Question

What are vestigial traits? what are homologous structures? what are analogous traits? can you explain these using the terms "adaptation" and "common ancestor"?

Answer 1

Vestigial traits are adaptations to environmental pressures which are no longer present.

homologous structures are similar structures found in different species that were present in a common ancestor.

analogous traits are similar traits found in different species that were developed independently (this process is known as convergent evolution)