There's an extra set of dna that gives some people eyes that are different colors a condition called heterochromia it's very rare but also harmless generally eye color describes the ring of muscle around your pupil called the iris it allows light to enter your eye and the color of the iris depends on the pigment melanin.
the more melanin you have the darker your eye color is the majority of people have the same amount of melanin in both eyes which is why they match unless you have a genetic mutation like heterochromia there's a long palm muscle cleverly named palmaris longus that was used to.
Help our ancestors perform certain activities like climbing trees we don't use are needed anymore but some people are still born with this muscle if you want to check to see if you have it simply put your arm on a flat surface touch your thumb with a pinky finger and you'll see this muscle popping out of.
Your wrist there are some rare body features that aren't very noticeable like the lrp5 gene mutation that gives some people very very dense bones up to eight times denser than average making them some sort of superhuman that means they have bones that are extremely hard to break plus their skin.
Is less prone to aging also some are born with an extra rib near their neck this rib can vary in size and it does not become an issue unless it grows in size that's when it causes discomfort but if it remains normal sized it's like you have an additional bone you don't even know about.
You've probably heard of a widow's peak that's when your hairline forms a v-shaped point in the center of your forehead basically a low point in the middle and higher on the sides some people just have a hint of it while others have a pretty distinct one especially when they pull their hair straight back.
The name of this feature could be a holdover from the 18th century england where certain women wore black triangular hats whose point would fall in the middle of their foreheads approximately 33 percent of the population has this now when your friend tells you they don't need to sleep a lot and can.
Operate throughout the day without feeling tired and with no problem don't make comparisons or feel bad if you can't follow the same rhythm maybe they have the rare dec 2 gene sleep experts generally recommend at least seven hours of restful sleep but people with this condition which make up about five percent of the world's.
Population can sleep for only four to six hours and get up fresh and fully rested their gene mutation allows them to go through a sleep cycle way faster than most of us do so that leaves them extra time to achieve more things while awake people like margaret thatcher and nikola tesla.
Had this condition and there are arch fingerprints too sixty-five percent of people have hoops about thirty percent have a pattern in the shape of a whirl just five percent has the specific arch fingerprint pattern brown is the most common eye color gray.
Eyes are the rarest only three percent of people have them which is three times less than the number of people with blue eyes and only two out of every 100 people have green eyes the reason for that is that green isn't a predominant color so if one parent has brown eyes green will most likely lose the battle also only five percent of people have.
Amber eyes which means a coppery or golden tone with flakes of green gold or brown but amber eyes are common in birds dogs and fish some people have a tooth gap which is often called diastema there are many famous people who have made this their trademark it's rather unique because up.
To 25 percent of people from different age groups and populations have it one quarter of the world's population has an extraordinary sense of taste these super tasters simply have a higher number of taste buds on their tongues than the average person they're especially sensitive to bitter flavors.
When some of them were going through lab tests they were repulsed by the bitterness of some chemicals that average tasters couldn't sense at all because they're so sensitive to certain flavors these people mostly avoid high fat and high sugar foods that's good but they also avoid certain healthy vegetables because of their intense.
Flavor too on the other hand the same number of people have fewer taste buds which means a decreased sense of taste only five percent of people have a tiny hole near their ear which could basically be proof that once upon a time all living things had gills.
This extra hole doesn't have any particular purpose and it's not dangerous another rare body condition is having two layers of eyelashes having a second row of eyelashes isn't a problem in most cases if you maintain it properly it can really bring focus to your eyes like elizabeth taylor who had this condition.
Did if you have a second toe that is longer than the first one you have a specific thing called morton's toe up to 22 percent of people have this feature it got its name because of the scientist dudley joy morton who believed that long second toe was an evolutionary leftover.
That kind of reminds us of pre-human grasping toads what's interesting is that the statue of liberty also has morton's toe now we all sneeze but about 25 percent of the general population have a pretty unusual reaction when they're exposed to direct sunlight you got it sneezing we call this phenomenon a photic sneeze.
Reflex about ninety percent of people are right-handed well nine percent are left-handed and those that can perform most of their tasks equally well with both hands are the rarest they're called ambidextrous why do we even have a dominant hand.
The answer is probably related to the fact our brain has two hemispheres and keeping specific functions on one side means the information doesn't have to cross over to the other one so our genes determine which hand would be the dominant one and sometimes they create a mutation where a person can do equally well with both hands.
20 of the population are born without wisdom teeth most people develop them between the ages of 17 and 21. it's a spare set of molars way in the back some people have them even though they can't see them they don't erupt or ever become visible an x-ray can confirm they have wisdom teeth under their gums our ancestors used to really need these.
Teeth humans today have smaller jaws than before some theories say it's because our brain got bigger so the jaw had to get smaller to accommodate for space yeah i like that one also since we eat cooked food and our diet is different than our ancestors we lost those extra molars through evolution but some people.
Still have them you can see the majority of people have only one clockwise hair whirl but five out of every 100 people have a double crown and if you have both of these whirls directed counterclockwise you're even more unique clasp your hands now check the position.
Of your thumbs which one naturally comes above the other if it's the right one you're in fifty percent of the population and does it feel kinda weird when you place the left thumb above the right one for 49 of people it certainly doesn't because that's their natural position only one percent of people place their.
Thumbs next to each other when they clasp their hands do you know exactly which side your heart is on rare people have it on the right side of their chest this is a rare anomaly that mostly doesn't come with any negative consequences if your hair is naturally red you make.
Up one to two percent of the world's population because this hair color is the result of a genetic mutation redheads need to have both parents with this gene to inherit this color you might think rolling your tongue is not that common but it actually is more than 80 percent of people can do it but less than 15 percent can actually make a.
Clover out of their tongue ew did you know some people are able to make a roaring noise in their head using their jaw yup they can do it thanks to a tiny muscle located in their middle ear most people can't contract it willingly but some can and that's how they produce a rumbling in their ears that reminds them of thunder or roaring so that's not.
Really a lion behind you oops my bad we all get goose bumps when we hear our favorite song or witness something very emotional or when we're cold but some people less than one percent of them can actually give themselves goosebumps whenever they want and one quarter of the world's.
Population have a hitchhiker's thumb that's a condition where you can bend the upper part of your thumb 90 degrees backwards ooh let's try it ow