Race classification and characteristics
In the world, according to the difference of skin color , people are roughly divided into three races, namely: yellow race, black race, and white race. Of course, it does not rule out the existence of several transitional races. In fact, at the beginning, humans have the same skin color , Darwin in " Origin of Species " also stated that humans came from the same ancestor .
According to the latest research, all species in the world come from " Homo sapiens ". The early Homo sapiens evolved from the "Homo erectus", and now humans are called " late Homo sapiens " , also called "modern man" . Since the emergence of "Homo sapiens", has adapted to different living environments , and a series of other factors have led to the difference in skin color of today .
- black
As most of them live in tropical areas such as Africa,So the skin is dark. Because the tropical climate is hot and precipitation is very little, resulting in lack of material conditions, resulting in the slow evolution of the black race and at a disadvantage , therefore, most parts of Africa still maintain the lifestyle of primitive humans. Therefore, black people have good physical fitness , and their physical indicators are the best among the three races.
- white people
Most of them live in temperate cold zone , and the white skin of their ancestors has changed. It is also due to the migration of white ancestors to a more suitable living environment, making not as good as black people in all aspects of physical function.
- yellow race ul47ul
- black
- Caucasian
- yellow race ul47ul
also known as " Asian American ", mainly distributed in the north and south of Asia, span, span11, span_span_span_span11, northern and central America. Countries covered: China, North Korea, Japan, Siberia . Including American Indians. Most of the skin color is yellow, black hair, dark eyes, and high cheekbones. Since the ancestral habitat of the yellow race is far away from the other two places, the brain circuit has become deeper and deeper during the long evolution ,The IQ index is also better than the other two races. Therefore, the physical indicators of the yellow race are not superior to the other two races .
The development history of each race
According to investigations and studies, human ancestors lived in Africa. The earth's climate changed tens of thousands of years ago, and Africa began to be dense and hot. The forest began to become thinner, and the dry land area continued to expand. Therefore, the modern white ancestors migrated to the Europe continent today, and the current yellow ancestors migrated to the Asia continent, and the modern black ancestors still remain in place.
Because of the long-lasting sunlight on the African land, has strong ultraviolet rays , and melanin under the skin produces much more, and generations of inheritance have formed today's black people. However, due to the hot weather and the sharp decrease of the forest area, the resources on which organisms depend for survival are becoming fewer A tribe similar to the matrilineal clan commune.It is also because they are less curious and less exploratory, so blacks have less brain swelling than whites and yellow .
After the Caucasian ancestors settled in Europe, the local climate is pleasant, the rainfall is abundant, the forest is abundant, and the production and living needs are strong. 7strong Most primitive tribes live by hunting animals. In the lush forests of Europe, has less direct exposure to sunlight , so there is less melanin production, which is passed on from generation to generation, forming white skin .
Caucasians have inherited the ancestor's wild, extensive, and strong sense of strength , making unstable and irritable , and research shows that people with unstable personality are often prone to curls . It is also due to the dense forest and insufficient light. The white ancestors needed to be vigilant against beasts when they lived. As a result, their eyes became blue-green, and they could even emit fluorescence. However, due to later evolution, the fluorescence disappeared. Evolved into today's blue. Therefore, we can see that today, European natives are " blonde and blue eyes ".
is also because it mainly feeds on animal meat,Caucasians are tall and tall. In addition, the white ancestors did not win by the crowd in the hunting process, but the minority and even the individuals hunted alone, which made them very personal. Today’s various extreme sports started from the West also because of this. In addition, " self-interest " and " capitalism " will rise in the West, and they are inseparable from this.
To put it simply, "selfishness" is because since the original hunting has the characteristics of " eats enough for one person, but the whole family is not hungry. "; as for the food is mainly animal food, is not easy to store , so it is white. Hunting when needed, eating as much as you catch, and not paying attention to storing supplies, it is lavish, and it is very similar to the form of capital development.
yellow race ancestors settled in Asia Continent, there are no dense and dense bushes, strong vegetation, no more complex 11spanspan_strong. But has a pleasant climate , and the sun is not strong compared to the tropics, forming a light brown skin between black and white. After a long inheritance, it has become today's yellow race.
is also due to the complex terrain factors of the Asian continent, but there are many shrubs and herbs, and they mainly feed on plants , and the yellow people are not as tall as Europeans. After encountering beasts, yellow people tend to be " groups and attack ". Therefore, the yellow people have a very strong concept of inheritance , because they need more people to kill larger prey or plant more. Food. It is also because of the group living , the ancestors of the yellow race paid attention to the interpersonal relationship , and emphasized the order of superiority and inferiority .
In order to better adapt to this land the complex terrain and changeable natural environment , after observation, exploration, and discover all kinds of wisdom used to sort out nature, such as: " Tai Chi" Gossip", " five elements", " solar terms", etc. Then, in order to facilitate eating and truly distinguish it from animals, there is tableware . Yellow people who feed on plants take " branches " and have chopsticks ; while white people eat more meat, take animal bones and have " knives and forks ".
Reproductive isolation
If you want to ask why different races can mate freely? Is it due to the failure of reproductive isolation? You need to understand what reproductive isolation is.
According to the official definition, reproductive isolation means that closely related groups cannot mate under natural conditions, or cannot give birth to offspring. If isolation occurs before fertilization, it is called reproductive isolation before fertilization .
In actual reproductive isolation, there are many classifications, such as geographic isolation homologous species due to geographic problems are divided into different populations, and can not have gene exchange between various groups .
Ecological isolation: Due to the different living habits of , and 's dietary nature, and 's habitats are different, so that it is difficult to successfully mate between populations with close relationships . In layman's terms, birds with similar relationships foraging in the same forest will prey on different insects at different levels of the tree , even if they prey on the same forest or even the same tree, it is difficult for to mate and reproduce .
behavior isolation mating behavior due to differences between two or more closely related groups mating is not easy to succeed isolation mechanism.
hybrid is not alive is a kind of reproductive isolation that occurs after crosses . After two different organisms mate, although zygote can be formed, the zygote cannot survive ; or after the zygote survives, The embryo dies when it develops to a certain stage; even after it develops into a larva, the has a weak vitality.
Hybrid sterility is also a phenomenon in which the offspring cannot be reproduced after crossing. Such as: mule , which is a cross between a horse and a donkey.
Historian Yuval Noah Harari wrote about the theory of race in his work " Homo sapiens ". In 2010, a DNA mapping project ended, and the results showed that " 1%-4% of the genes of a large number of Europeans are Neanderthal genes." Aroused a huge social response, " hybrid theory_ strong7strong" provides support.
later discovered that modern Melanesian and Australian aboriginal have 6% Denisovan genes in their DNA. With the support of these mapping data, we traced back to the source and found that regardless of black, white or yellow, originated from the African Homo sapiens , so did not form absolute reproductive isolation between them.
Why can different races mate freely?
What is free mating ? In simple terms, ignoring the boundaries of skin color, living area, language habits and other mating behavior . In fact, as far as humans are concerned, from the classification of biological reproductive isolation , the most fundamental isolation between different races is geographic isolation and ecological isolation . From a modern point of view, in the context of the community of social and economic development, the isolation factor between geography and ecology is no longer a condition that hinders "free mating".
What's more, according to the world ethnographic gene map researched by the Americans, many of the Manchu Eight Banners are 7strong Han.There are also Indians who live in Asia. Most of the blacks living in India belong to Andaman Islands indigenous , and South India has a large number of blacks and whites . Some of Burmese Muslims are descendants of Turkish and Arab merchants . The Uyghur is estimated to come from ancient indigenous peoples of Indo-European . Various results show that the melting pot of human cultural exchanges around the world has long been formed.
Since primitive humans, human genes have a common appearance, but in the process of acquired evolution, in order to adapt to the different climates of and , differentiated into different but commonalities The physical characteristics of , and then use it as a mark to distinguish races.
In fact, in addition to the three major races based on skin color, according to the detailed points of geographical , there are Indian race, Caucasian race, Indian race , etc.But in the final analysis, they all come from the same ancestor of , and the genes are basically the same , and they are all members of the "human" family , and are part of life on earth.
Eliminating racial discrimination and advocating equality for all
Since World War II, the Third World Independence Movement and the Racial Equality movement in Western countries, many countries around the world have formed discusses the concept of political correctness of race also believes that racial differences should not be summed up by racial discrimination.
Regarding racial discrimination, the United Nations has established the " International Convention on the Elimination of All Forms of Racial Discrimination ." On December 29, 1981, the China government deposited and joined this book. On January 28, 1982, the convention entered into force for the People’s Republic of China , and China has reservations to the provisions of Article 22 of the convention (dispute settlement methods).
Engels said: "The proletariat has grasped the bourgeoisie; equality should not only be superficial and implemented in the realm of the state, it should also be practical and implemented in the social and economic sphere."
Actually,Eliminate racial discrimination and advocate equality for all. It is not only a major international problem, but also exists in the lives of the people, such as " can not judge people by appearance", " be humble and treat others ." These aphorisms are the inheritance of Chinese culture. Thousands of years of indoctrination to later generations.
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