2% of people naturally have red hair. In order to have a child with this hair color, both parents need to possess the gene, and while redheads make up a tiny part of the population, one study found that 30% of ads have people with red hair in them.

25% of people sneeze when they're exposed to direct sunlight. It's called the photic sneeze reflex.

10% of people have something called Morton's toe. It's when your big toe is shorter than the one next to it. The Statue of Liberty actually has a Morton's toe as well.

Only 12% of people have tetrachromacy - the ability to see a lot more colors than the majority of people. They can see about 10 times as many shades and colors as someone with normal vision.

Less than 1% of people have this small little hole right on their ear. Some evolutionary biologists claim this used to be a gill on humans.

Only 1% of people are ambidextrous - they have no preference for the use of right or left hand.

Less than 1% of people have their heart on the right side of their body. Surprisingly, this doesn't normally come with any negative consequences.

35% of people have no wisdom teeth. Wisdom teeth used to serve a purpose but now they no longer do, which is why we take them out so they don't get infected while they're pushing through your gums. If you don't have wisdom teeth, I'm jealous of you.

24% of people can raise one eyebrow, however you can learn to do this as well.

30% of people can flare their nostrils on command. However that muscle has very little use and is usually weak, so a lot of people can't do it on command.

4% of people have Raynaud's syndrome. This is when a part of your body, usually your fingers or toes, starts to turn white when exposed to low temperatures. It's your body's overreaction to cold or distress.

Less than 1% of people can hear colors or see sounds (synesthesia).

Less than 1% of people have pointy or elf-like ears. It's an abnormality called Stahl's ear, it's usually corrected early in life.

83.7% of people can roll their tongue, but only 14.7% of people can make a clover out of their tongue.

Only 5% of people have arched fingerprints. Most people have looped and whorled fingerprints.

Less than 1% of people have an extra rib. Most people are born with 24, but some have 25 ribs. The 25th is called a cervical rib.

25% of people have perfect teeth and never need braces or any orthodontics. 45% of children need braces, but 75% need orthodontic care.

Less than 1% of people can give themselves goosebumps on command. The majority of people get them when they're cold or listening to music, but some can give themselves goosebumps whenever they want to.

Only 33% of people can whistle. Almost everyone has the ability to whistle, it just takes the right techniques.

9% of people can taste the soap taste in cilantro. Cilantro contains the chemical that is also a byproduct of soapmaking.

Less than 1% of people in the US have AB-Negative blood. There's also something called Golden blood, which only about 40 people in the world have, and it's completely different than any other blood.

Only 10% of people have birthmarks. They're usually oval in shape and come in a coffee type color.

Only 10% of people have Darwin's tubercle - the little bump on the outside of your ear. It's believed that people who have this are better at sensing voice tonality.

5% of people have amber eyes - golden or coppery with flakes of gold, green or brown. Amber eyes are very common in dogs, bird and fish.

4% of people are colorblind. Color blindness occurs in 8% of men and 0.5% of women.

1% of people have a double row of eyelashes. While this might look like something a lot of you are jealous of, it actually can cause a lot of problems.

8.4% of people have a counterclockwise hair whorl on their head, while the majority has a clockwise one.

25% of people have a Hitchhiker's thumb - when the upper part of the thumb can bend 90 degrees backwards. It's caused by a certain gene.

5% of people have a double hair whorl.

8% of people still have chimp-like feet, that are specifically adapted to climbing trees. This is characterized by a mid-foot arch. If you want to check if you have this, see if you can bend the ball of your foot as well as the region half-way between your heel and the ball of your foot.