What are the races in the world?
What race are you? White or yellow? Why is skin color so different on the same earth?
In fact, no matter what race you are, all belong to the original race, the same species,have the same ancestor, namely "Homo sapiens".
Race is a human population with common genetic constitution. In biology, all kinds of human race belong to the same species, namely Homo sapiens. Different races are equivalent to several varieties of a species, all of which originated from a common ancestor. Although different ethnic groups have differences in skin color, eye color, hair color, hair style, head shape, height and other characteristics, these differences are due to the long-term adaptation of human beings to the local natural environment in a certain region and the long-term isolation.
According to the differences in physical characteristics, in the past, the world's races were roughly divided into three categories, namely yellow race, white race and black race. Some people also advocate that brown people should be separated. There are also some transitional races among these major races, such as Ethiopians and South Indies between Negro race and Caucasian race. With the development of human history, the improvement of human production capacity, the enhancement of the ability to control nature, the gradual strengthening of social factors and the gradual weakening of natural selection factors, the increasing frequency of human communication, the continuous occurrence of hybridity among various human groups, the phenomenon of hybridity is more and more widespread, and almost extended to every corner of the world. Therefore, there is almost no absolute purebred in the world Race.
Also known as "Asian American race", it includes the original inhabitants of East Asia, North Asia, Central Asia, Arctic and the American Indians. Physical characteristics: yellow or white skin color; straight hair and black hair; dark eyes; high cheekbones; flat face; high incidence of internal folds and spade shaped incisors; sparse body hair and beard. It is mainly distributed in China, Korea, Japan, Siberia, Indochina Peninsula, America and Arctic region. It is formed in dry and snowy areas and windy and sandy areas of East Asia and Central Asia. Among the four ethnic groups, the population is the largest and most widely distributed. The spade shaped teeth of the East Asian people originated from the temperate zone, and were favorable to depend on plants (fruits, leaves, stems, etc.).
Although there are many similarities between Indian geographical race and Caucasian race in appearance, some of them are skinny with dark complexion and slender figure. In addition, the bone mineral density was low, the incidence of type B blood group was high, and the incidence of Rh negative blood group was low. It shows that the blood group characteristics are similar to those of East Asian people.
Caucasians have a high incidence of Rh negative blood group and A2 blood group, which is different from Indians. It has light skin color and thick hair. Large and narrow nose and male baldness are also the prominent characteristics.
Indian geographical race, or American Indian geographical race, used to be classified according to appearance features, such as straight black hair, high incidence of spade shaped incisors, sparse body hair, less male baldness, etc. But its skin color is thicker than that of East Asian people, and has a reddish hue. Their blood group characteristics are also different from those of East Asian people. For example, there are few people with type B or Rh negative blood group, and there are few people with type N blood group, and the incidence of Diego positive blood group is high.
The blood group characteristics of East Asian people are that the occurrence rate of type B blood group is high, the occurrence rate of Duffy blood group and Diego positive blood group is unstable or high.
The geographical race of Negro can sometimes be divided into the Congo race with typical features and the Cape race with yellowish complexion, short stature and spiral tufts (including the coisan). There was no significant difference in blood group between the two groups. Generally, the occurrence rate of R0 blood group is high, u-negative blood group is slightly less, FY and V blood groups are very rare. Abnormal hemoglobin. There was glucose-6-phosphate dehydrogenase deficiency.
The geographical race of Australia has dark complexion, wavy to curly hair, slender figure, medium to thick body hair, high rate of baldness in men, and hairless legs. Large teeth, high brow ridge and prominent mandible. The occurrence rate of type B blood group is very low, the occurrence rate of type N blood group is very high, and there is no type s blood group. There was no abnormal hemoglobin, no glucose-6-phosphate dehydrogenase deficiency, contrary to Negro race.
The Australians and the Australians were once called Australians.
The appearance of Melanesian geographical race is similar to that of Australian race, but the occurrence rate of shovel shaped incisors is high, and the occurrence rate of B and s blood groups is high. There are 6-phosphate glucose dehydrogenase deficiency and thalassemia genes. Maybe the Australian race is more closely related to it.
The geographical race of Micronesia was once considered to be a hybrid of Southeast Asians, Melanesians and Polynesians. However, the occurrence rate of type B blood group was slightly higher than that of type M blood group, and the occurrence rate of Duffy positive and Diego negative blood groups was very high. It shows that they are an independent geographical race.
Polynesian geographical race has lighter skin color and less body hair. There were no Rh negative and A2 blood groups, and the occurrence rates of B, m and Duffy positive blood groups were not high. Although the facial features are similar to those of East Asian people, the light complexion, wavy hair and thick beard are similar to those of Caucasian people. Its blood group is quite different from that of East Asian and Caucasian.
Each race has a unique ability to adapt to its own environment. Race itself is regardless of high or low. The idea of racial discrimination is a sense of ignorance.