Everyone's body is a little different, but some people have features or attributes that are so rare that they're practically 1-in-a-1,000,000. Or even rarer!
These crazy traits don’t show up often, but when they do, they certainly make their mark. Sometimes, they will give a person a striking appearance. Other times, it’s all taking place inside, causing them to live a very different life than you or me.
Take a look at ten insanely rare features that both bless and plague a few people throughout the world.
Some people still have a vestigial muscle from when our ancestors would climb trees.
That tendon appearing on the left, but not the right is called palmaris longus. We don’t use it these days, but genetics ensure that it still pops up in the population quite often. Its only use now is as a donor tendon in the event that a person needs a tendon graft.
Are you a tetrachromatic?
The word might be a mouthful, but it’s a pretty simple concept. Tetrachromatics have a fourth type of cone cell in their eyes, enabling them to see over a hundred million colors when the average person can see only a million. Sometimes, artists get this trait and paint vivid pictures that can only be truly appreciated by other tetrachromatics.
This genetic deficiency keeps heart disease at bay.
A gene called Proprotein convertase subtilisin/kexin type 9 (PCSK9) exists in all of us, but a small subset of the population has less than the rest of us, which puts them at lower risk for cardiovascular disease.
Drug companies are studying the phenomenon and are hoping to create a drug that lowers the levels for everyone in the battle against heart disease.
This is chimerism.
As you can see, chimerism can lead to this striking image of a man with two very different color eyes. It occurs when people carry a second set of DNA in them, which materializes in strange, but usually safe, ways like this.