What is the height of southerners? Not as good as the north

Southerners are shorter than northerners, which is not entirely correct. It can only be said that northerners are taller on average. Because South Renye Fang is very high. Then why is there such a gap? Let's analyze it together. The height of human beings in different regions and nationalities is ultimately the result of the interaction between genome and environment. According to the current research, we know that height is a trait controlled by multiple genes. The so-called character, in layman's terms, is what the organism shows. Multi-gene control, that is to say, there are many genetic variations that affect height. At present, scientists have identified hundreds of genes related to height, and each gene has little effect.

The height difference between north and south of China can be explained from several aspects: ① Geographical differences. Yuanmou man in Yunnan is the earliest ancient human in Chinese mainland so far. Later, Lantian Man Site, Peking Man Site and Neanderthal Man Site were discovered in Shaanxi (relatively close) ... This shows that the ancient human migration in China was from south to north, and there was no difference in the height between north and south in China. The north is located in warm temperate zone, cold zone and desertification zone, with dry and cold weather, and a cold current often comes from Siberia. In order to resist the long cold in winter and spring, the human body must instinctively, timely and in advance store more energy for external consumption of temperature. In the early north, the days were short in winter and spring, and the nights were long, so they rarely traveled far away (excluding war harassment), and the internal friction was reduced. For example, Shaanxi people live in caves and sleep pits in the northeast ... and they have enough sleep time, which is also conducive to increasing their height. Geographically, the south belongs to tropical and subtropical warm and humid monsoon climate. The temperature is humid all year round, and the crops are rich and diverse. People are basically working or walking (of course, there should be leisure season), unlike people who can sit and play mahjong, play mobile phones, eat, chat and drink tea at night! Long-term physical consumption reduces the factors left for the "free" growth of bones ... Second, the difference in terrain. There are many hills and lakes in the south of Ma Pingchuan, and the production tools and methods lag behind those in the north. There are relatively few tools such as horse-drawn carriages and ox carts. Some places are farming in two or three seasons a year, which inevitably requires more physical strength to complete work and travel. Some even have to keep wading through mountains and rivers, shoulder to shoulder! Sometimes I have to engage in sideline business, and my self-consumption is definitely higher. However, northerners can basically "relax" after "completing" their due harvest, leaving timely time for bones and fat to increase their "harvest".

We all know that there are great differences in environment and diet between the north and the south. Everyone in the environment knows that men are rainy and wet. The north is sunny and the weather is dry. I'm from the south. I came to Beijing in my first year of college. That autumn and winter really made me realize what dryness is. I never need to put anything on my face in my hometown. But it doesn't work in Beijing. If you don't apply it, it will peel off and your whole face will hurt. This is the biggest difference between the north and the south in climate and environment. And the diet structure can also be said to be the biggest factor. We all know that northerners like to eat pasta. Southerners like rice. Pasta is made of flour, which is ground from wheat, so rice is planted in the north. Southerners like to eat rice. Rice comes from rice, so men grow rice. We have all heard a word called polished rice! In other words, rice belongs to flour and rice. Pasta made of flour belongs to coarse grains. People who eat more coarse grains will grow their bones and muscles rapidly, while polished rice and polished rice are the opposite. What is said here is universal characteristics, not absolute. Because there are many tall people in the south and many short people in the north. What we are studying is a universal feature. On the other hand, in some places, there are also some local characteristics that lead to height problems. For example, from Chongqing, the overall height of men is 167. Because Chongqing is humid, if you live here all the year round, you must have physical problems. Therefore, people in Chongqing like to eat peppers, and basically every meal has peppers, in order to drive away the moisture in the body. But it also inhibits the growth of height. We all know that extremes meet, so if you eat too much pepper, your height will be limited.

In the past, the population mobility was not as great as it is now, and people in most places lived there for generations, so northerners still kept more Mongolian genes, while southerners kept more Malay genes, so it seems that southerners are lower than northerners. Some people may argue that animals usually get bigger as they go north. For example, among tigers, the Siberian tiger is the largest, and people are the same as animals, so the farther north people are, the bigger they are. This is actually related to it, because the bigger their bodies are, the heavier they get and the colder they get, but this is not the main reason. Eskimos are yellow people, too, but they are very small in the Arctic, but they are the tallest animals in the world, such as elephants and giraffes, and they are very small.

We all know that northerners like to eat pasta. Southerners like rice. Pasta is made of flour, which is ground from wheat, so rice is planted in the north. Southerners like to eat rice. Rice comes from rice, so men grow rice. We have all heard a word called polished rice! In other words, rice belongs to flour and rice. Pasta made of flour belongs to coarse grains. People who eat more coarse grains, bones and muscles will grow rapidly, while polished rice and polished rice are the opposite. What is said here is universal characteristics, not absolute. Because there are many tall people in the south and many short people in the north. What we are studying is a universal feature. On the other hand, in some places, there are also some local characteristics that lead to height problems. For example, from Chongqing, the overall height of men is 167. Because Chongqing is humid, if you live here all the year round, you must have physical problems. Therefore, people in Chongqing like to eat peppers, and basically every meal has peppers, in order to drive away the moisture in the body. But it also inhibits the growth of height. We all know that extremes meet, so if you eat too much pepper, your height will be limited. It is even more difficult for people from the north and the south to truly be intertwined, because people from the south and the north have come and gone for so many years, and there is no obvious boundary, so they can only be distinguished geographically. So we can only make a cursory study.