Vestigial structures take many forms: organs, behaviors, and even biochemical processes. Their defining characteristic is they are structures that a species has retained, but no longer serve their ...

For the most part, your organs and limbs serve a purpose, so it stands to reason that losing one of these can interfere with your body’s normal, everyday function. On the other hand, it’s well-known ...

VESTIGIAL organs have long been a source of perplexity and irritation for doctors and of fascination for the rest of us. In 1893, a German anatomist named Robert Wiedersheim drew up a list of 86 human ...

Anatomical structures can be broken down into three groups: homologous, analogous, and vestigial. Vestigial structures are essentially leftovers from our evolutionary journey, though there is some ...

Pet owners, you know the look: Your cat hears you pouring the Purina, and suddenly she’s all ears. As she stops in her tracks and turns to face you, her ears swivel straight toward the sound of all ...