Why are white and yellow hair colors different for black people?

Hehe, the geographical area is different, the living environment is different, this is the reason why there are no two leaves of the same number of trees haha.

The reason why Caucasian hair is mostly blonde: there is a lot of titanium in the hair. The color of the hair is the same as the metallic elements contained in the hair.

The difference is related. Black hair contains equal parts copper, iron, and melanin.

When the amount of nickel increases, it becomes off-white. Blonde hair contains titanium, reddish-brown hair contains molybdenum, reddish-brown hair contains cobalt in addition to copper and iron, and green hair contains too much copper.

Hair color often changes with age. Generally speaking, after people enter middle age, the void of hair tissue increases, granular melanin gradually decreases and disappears, and the hair gradually turns yellow. When cortical cells contain air, the hair turns white.

Since hair color, like skin color and eye color, is determined by melanin, there is a close correlation between the three. Worldwide, light-skinned people often have light hair and eye color, while dark-skinned people often have darker hair and eye color, such as Northern Europe.

People, ** are white, hair is blonde, and eyes are turquoise. Whereas, black people, regardless of skin color, hair color, or eye color, are black.

Chinese hair is black because the proportion of melanin in hair is relatively high. It can reach about 98%, but it is not absolute, and individual differences are relatively large. And Americans live in areas with little sunlight, with less ultraviolet rays, ** and very little melanin in the hair, and over time yellow hair will be formed, which is the result of evolutionary adaptation to nature.

Because of the different races, the races are divided into yellow races, black races, and white races. Chinese are yellow and their hair is black, and Americans are white and their hair is blonde.

This is determined by human race, human beings have formed different skin color races in the process of long-term evolution, and different races have different skin colors and hair colors, such as Asian yellow people have black hair, European and American white people have blonde and golden hair, South American hair is brown yellow, and even some African hair is fiery red.

Not quite. Races are different. But the Chinese also have more yellow hair. Minority. The United States is a country with a wide range of races. There are also other colors.

Hair color is genetically determined.

Over the course of human evolution, different species have distinguished different colors of skin and hair, and there is no reason for this.

It can only be said that the genetic decision and selection are so, so why people's skin color is different and why people's hair color is different is mainly because of genes.

Genes are different, which leads to the creation of these factors. As for the reason for the genes, then it is even more impossible for human beings to answer.

Chinese are yellow and Americans are Caucasian, so the hair color is different.

Today I will bring you a little physiological common sense, which most people may know, but let's popularize it, that is, why some people's hair is naturally straight, and some people's hair is very curly? This is more prominent among different races, black people have thick and curly hair, many Europeans and Americans are also born with curly hair, while most Asians have straight hair, of course, the most direct reason is the DNA that determines the shape of the hair follicle, straight hair follicles long straight hair, curly hair follicles long curly hair.

Curly hair, just like other characteristics of humans, reflects the evolution of human adaptation to the environment, for example, Africans have thick and large curls, mainly because they live in the tropics where the sun is intense, and curls protect their hair and isolate light and heat from the head, while most of Europe is colder, and curls can keep their head warm. The temperature in Asia is neither cold nor hot, so a crisp straight hair can handle it

Of course, in order to pursue fashion, many people in modern times go to their hair to curl, and some to straighten their hair, love beauty, everyone has it, but these will have a certain amount of damage to their hair, in fact, the hair is not related to the curl, all are just as good-looking, but everyone should take care of it.

Caucasian** black, hair curly and wavy, a collapsed or medium nose bridge, wide nostrils, thick and prominent lips, wide mouth, well-developed sweat glands on the palms and soles of the feet. Yellow people** yellow, straight hair, sparse beard, medium width of nose, medium thickness of lips. Caucasian** white or light color, wavy, soft, narrow and high nose, longitudinal diameter of nostrils larger than transverse diameter, thin lips, small mouth width, body hair and beard.

In fact, to put it bluntly, it is determined by genes, and the difference in genes causes yellow people to have straight hair, Africans and Caucasian people to have curly hair, even if they use physical and chemical means to change it later, it can't be hidden, or it is rooted in the genetic environment.

Not all yellow people's hair is straight, and some yellow people's hair is also curly, but the hair of white and black people is curly is derived from heredity, because there are genes in the genes of white and black people that make hair curly, so both white and black people are curly, but in the genes of yellow people, there are genes of value and curly genes, so yellow people have straight hair and curly hair.

The most direct reason is the DNA that determines the shape of the hair follicles, straight hair follicles grow straight hair, and curly hair follicles grow long curls.

The DNA of different hair follicle shapes determines different hair shapes, that is, the shape of hair is determined by genes, and people in different regions have different genes and different hairstyles due to different environments.

Asians and Westerners have different genes, different types of heredity, and natural hair color and hair quality are also very different. In fact, our hair quality has an incomparable advantage of Westerners! The color of your hair depends on the ratio between eumelanin (brown melanin) and brown melanin (reddish-yellow pigment).

The vast majority of Asian hair is black because eumelanin is the vast majority (98).

The root cause of hair color differences is due to human evolutionary and genetic factors, which is the same as skin color. Because yellow people live in sunny and subtropical areas for a long time, strong ultraviolet radiation increases the melanin content in the hair to protect themselves. In this way, it is passed down from generation to generation, and the hair is black.

Generally speaking, Caucasian hair is mostly brown or yellowish; Black hair is mostly dark brown; Yellow people have more black hair, but there are different shades, and the black light is the most gray hair.

Human hair is dominated by cortex, with a little medulla running through, so the black color of the hair is mainly determined by the amount of melanin in the cortex and the air bubbles present in its cells. The more melanin there is in the cortex, the less bubbles between the cells, and the darker the hair color; On the contrary, the amount of melanin is low and there are many bubbles, and the light reflection produced by the cavitation makes the color of the hair fade and even become white flowers.

Whether inductively or deductively, the farther away from the birthplace of human beings, the more homogeneous the human race, and the closer the place, the more diverse it becomes.

If we were to divide the races by the size of the genetic differences, Africa would be the place with the most races. The genetic gap between the two villages separated by a gorge is probably greater than that between the Germanic and Mongol peoples.

Homo sapiens soon after leaving Africa arrived in Europe and stayed for a long time, and even crossed with non-Homo sapiens here, and the genetic diversity can be imagined.

Asia, on the other hand, is a long way from Africa, and there may have been only a few different branches that first arrived here, with relatively homogeneous gene forms.

More extreme are some isolated island nations, perhaps even descendants of the same family.

I think this situation has something to do with our living environment, eating style, genetics, and other reasons.

Because the genes are different, and secondly, because the geographical environment and living habits are different, this situation will occur.

Personally, I think that hair color has no special relationship with race, skin color has a greater relationship with race, hair color depends on genetics, acquired nutrition, external environment and other factors, not just from race.

At present, Caucasian hair is more yellow and black.

The further north you go, the more yellow your hair is, the easier it is to stay away from black, while the southern regions tend to have more black hair, such as Czechs, Spaniards, Italians, and people with black hair.

There are both, and brown, brown.

A lot of women's hair is blonde.

Modern Caucasians are a mixture of dark white and explicit white races.

The facial lines of dark white people are relatively stiff, the sense of three-dimensionality is very strong, ** is not very white, the nose bridge is very high, the eye sockets are deep, and the body is medium.

The facial lines of the white race are softer, white**, with some blonde and blue-eyed variations, and the figure is very tall.

The white race appeared after the yellow race, and genetic testing showed that the closest blood relatives to them were the Indians and the yellow race, and all three races were differentiated from the dark white race.

Caucasian people (old age at 30 and high incidence of cataracts) can be seen as a relatively healthy branch of albinism (white hair, red eyes, photophobia, premature aging) in Indians or yellow people.

Because both the Indians and the yellow race absorbed the brown blood, their appearance was different from that of the white race.

Those who are not very white may be due to the fact that the genes that control skin color come from dark white people.

Generally speaking, the white blood of the Nordic people is high, and there are more white **. Arabs have a higher ancestry of dark white ancestry and more light brown**.

Yellow people themselves are not yellow, but they are easy to be tanned by the sun to turn black and yellow, while Caucasian people will be red when they are exposed to the sun, which is the essential difference, but yellow people are easy to tan yellow and easy to raise white. So to be exact, yellow people have beige white skin color, while white people have pink skin color.

Because the ancestors of the yellow race are the deep mixture of the Finno-Ural white people and the East Asian dwarf black aborigines, the pure Yanhuang (Huaxia) and Dongyi are both dark white people (similar to the Mediterranean white people), according to the deciphered genetic map, the Chinese ancestors belong to the Finnish-Ural race, the haploid is NOP, N is the Finnish race, O is the Chinese race, P is the Ural race, the Finno-Ural race is an important branch of the Caucasus, the other branch is the Aryans, the haploid is R, they are the ancestors of Europeans, Therefore, the two are half-brother peoples.

The Finno-Urals migrated from the southwest (one to the northwest) into the heart of East Asia in three routes, probably in Indochina (Southeast Asia), where they fought fiercely and conquered a large number of dwarf black natives; But the Caucasian population is very small, coupled with the frequent wars between tribes led to a sharp decline in population, so the blood relationship was gradually assimilated by the dwarf blacks, and the descendants produced the yellow race, the yellow race is the product of the mixed blood of dark whites and East Asian natives, which originally did not exist, and there are still relatively pure N and O Chinese people in Jiaodong, some parts of Liaodong, and some parts of central China, and their appearance is similar to that of European and American whites.

Relatively purebred whites, see no skin color!

Now Caucasians are all hybrids, and there are no pure Caucasians.