Did you know there are signs of evolution you can find on your body? Evolution is an imperfect process, taking millions of years for biology to adapt and change. However, along with these adaptations, remnants of the past are left behind. Called vestigial structures, these are usually bones, organs, or muscles that no longer provide a functional use for the body. They give scientists and researchers a unique window into how our bodies have evolved. Curious to find out what evidence lies right in front of you? Here are 25 Signs Of Evolution You Can Find On Your Body.
The Philtrum is the groove between your nose and mouth. It develops during the two to three months of embryo gestation in the womb. Because it has no real function, some evolutionists believe it’s a trait that was passed down from fish.
We’ve all had hiccups. They’re those annoying spasms in your chest you’ve tried every trick in the book to get rid of. You know, like having someone scare you. Scientists call this reaction “singultus,” and it has no known purpose. They believe it is a trait passed down from our amphibian ancestors. They’ve found that the electrical trigger in the brain for both amphibians and humans is the same when a hiccup occurs.
The Plantaris muscle is in the foot. Many primates use this muscle to grip objects with their feet. Humans also have this muscle, but it’s lost its function and purpose. Because of this, doctors will use this muscle when doing reconstructive surgery since it has no use in the foot.
The Darwin-Tubercle is a bump on the upper part of the human ear. Not all humans have this feature. Scientists believe this trait was passed down from other primate ancestors that have more pointed ears.
Palmar Grasp Reflex
Ever wonder why newborn babies will grip your finger really tight? It’s called the Palmar Grasp Reflex. In most cases, the baby’s grip is so strong, it can support their body weight. Scientists believe this reflex came from our hairier ancestors. Infants of other primate species will grip on to their mother’s hair to go from one place to another.