It could be that neither of your parents have curly hair, but an ancestor did. Then the curly hair gene could have been passed down through generations and your parents are carrier of that gene, which manifested its trait in you!
It's very normal to have a mix of curl patterns on the same head of hair. It starts with your genetics. You see, the gene for curly hair is not completely dominant. It can remain dormant until activated and then it changes the shape of the hair follicle which changes the hair that grows from it.
Hair morphology is one of the more conspicuous features of human variation and is particularly diverse among people of European ancestry, for which around 45% of individuals have straight hair, 40% have wavy hair, and 15% have curly hair.
So, while curly-haired parents tend to have curly-haired kids, there's no guarantee it will happen. Because many different genes are involved, even a curly-haired parent can have—and pass along—straight-hair gene variations.
Because you inherited the straight hair Gene from your dad.
Yes, only 11% of the population have curly hair.
Type 1A hair is very straight and fine, with no hint of wave or curl. As it is so straight and fine, when the natural oils travel to the ends, it tends to cause it to look like oily hair. It is the rarest hair type and is common among women of Asian descent.
The story of human migration and evolution is written in hair DNA. In sub-Saharan Africa, genes favour tight, curly hair. But in east Asia, mutations have led to straighter, thicker hair. In Europe, other mutations brought wavy and straw-coloured hair.
Curly hair is not certain to a race or ethnicity, it appears all over the world in many forms. White, brown, black and everything inbetween! There is also a scale on which curly hair is classified (2a-4c).
Others have curls and straighten them out. But for a few people, their hair actually changes shape and texture on its own — and not just because of the weather. Scientists don't know exactly why this happens, but it probably has to do with a combination of genetics, hormones and body chemistry.
Curly hair is often associated with a fun-loving, warm hearted and outgoing personality. If you have curly hair you are perceived as being courageous, outspoken, and spontaneous. You are probably someone who likes to challenge perceptions and norms.
In fact, more people prefer curly hair to straight hair. Though beauty is seen differently by everyone, one thing is for sure; curly hair is getting a lot of love lately. In fact, in a survey conducted by StyleCaster, a surprising 58% of guys thought curly hair was sexier than other hair textures.
During puberty, the hair follicles can change and cause your hair to become curly. Your hair follicle shape is determined by your genes but curly hair isn't necessarily a dominant gene.
Can you activate the curly hair gene? People who have a curly-haired parent assume that they can activate this gene. If by puberty your hair doesn't turn curly then you can't activate a curly hair gene.
Or your DNA might cause you to have oval-shaped follicles, leading to curly hair. Or you might have a little bit of round follicle DNA and a little bit of oval follicle DNA. In this case, your follicles would be a little bit in the middle!
As you get older, your curls may drop, loosen, or even form new curl patterns due to hormonal changes, like menopause. Environmental factors such as gravity, climate, and pollution also play a part. The thinner and weaker your aging curly hair is, the less likely it is to actually curl.
Caucasians have the highest hair density among the ethnicities studied. Black people have the lowest. Asian people have hair density that falls somewhere in between.
Lots of traits are statistically rare: Left-handedness (just 10 percent of the population!), curly hair (11 percent!), and blond hair (4 percent!), to name a few.
Caucasian, Asian and Indian hair samples were put to the test for the World's Best Hair study. Their results put an end to any splitting of hairs over the issue: in terms of health, the Indian hair is the best, topping other ethnic groups on all four counts.
Curly hair is considered a “dominant” gene trait. Straight hair is considered “recessive.” To put that in simple terms, that means that if one parent gives you a curly-haired gene and the other parent gives you a straight-haired gene, you'll be born with curly hair.
Caucasian hair can be smooth, wavy or curly. Its colorimetry can vary from blond to dark brown. It grows obliquely, and grows about 1.2 centimeters per month. Caucasian hair has an oval shape.
The same study showed that Asian (East and West) hair shape is also mostly straight (46.7%) or wavy (41.3%), with some curly hair (12%) (n = 92). However, African hair shape is mostly curly (94.9%), with some wavy hair (5.1%) (n = 39).
Hair type 1A is super-straight. It doesn't even hold a curl! 1A is the rarest hair type. It is usually found on people of Asian descent.
Red is the rarest hair color, according to Dr. Kaplan, and that's because so few MC1R variants are associated with the shade. “Only three variants are associated with red hair,” she says. “If a person has two of these three variants, they almost certainly have red hair.
It has been long established that curly hair is a dominant trait in Caucasians and straight hair is recessive.