Question

Why do scientists consider vestigial structures evidence for evolution?

Short answer

Vestigial organs show that changes in species occur throughout time, resulting in the emergence of a descendent having genetic or physical organs that differ from an ancestor.

Step-by-step solution

Vestigial organs : 

It contains organs that were once functioning in our ancestors but no longer serve a purpose in our bodies. These structures, according to scientists, are proof of evolution.

Explanation : 

Vestigial organs are genetic and anatomical traits in many animals that serve no purpose in those species. Pelvic bones of whales and snakes, as well as the human nictitating membrane and appendix, are examples. These organs are thought to be proof of evolution, according to experts.

The appendix has no clear function in humans, while it was beneficial in the digestion of plant products in our predecessors, suggesting that we developed from herbivorous ancestors. Vestigial organs show that changes in species occur throughout time, resulting in the emergence of a descendent having genetic or physical organs that differ from an ancestor.