If there is no genetically modified, there will be no human beings today?GMI is always on the road

As humans have deepened the study of life phenomena, they know that genes determine the characteristics of all creatures. Gene is also called genetic factor. It is a DNA fragment with genetic information. This invisible gadget that is invisible to the naked eye is hidden in the depths of biological cells, determining all phenomena such as the species of life and old, old, and death.

Gene engineering means that on the basis of recognizing genetic laws, through DNA reorganization or gene splicing technology, different sources of gene fragments, according to the pre -designed blueprint, build a hybrid DNA molecule in vitro Change some of the genetic characteristics of the creature and obtain new species that is more adaptable to the environment or improve quality.

People call this process as genetically modified technology. In fact, in addition to artificial genetically modified genes, nature has also been genetically modified. The reason why all the species on the earth have been evolving is that the deep -seated reason is that they are constantly "genetically modified". Only genetic changes can bring about changes in species traits.

In other words, if there is no such "genetically modified" species in nature, there will be no human and all Earth creatures today.

In this sense, genetically modified genes started from 3.7 billion years ago

There are two characteristics of genes. One is to be able to copy themselves faithfully to maintain the basic characteristics of creatures; the other is to be able to mutate and transform, so that creatures are constantly developing in the direction that is more adaptable to the environment.

There are two kinds of mutations, one is pathogenic mutation. This mutation accounts for most, which will cause diseases, such as cancer, mainly in individuals; The original materials are here to allow creatures to be selected for the most suitable natural environment in long -term evolution. It is the overall change of species.

There is no exact conclusion on the issue of the origin of the earth's life. There are two main ways of saying now. One is that life is born on the earth, from inorganic to organic to cells, and gradually evolved through chemical changes; another statement is that life is a foreign visitor. Earth.

Today we do not discuss the origin of life, but only talk about the history of biological evolution that the scientific community has long recognized. In March 2017, a research team at the University of London announced that in the strip -shaped iron constructor in northern Quebec, Canada, some small silk, tubular particles and strip -shaped microbial fossils were found. 4.3 billion years ago, it was considered the earliest and oldest form of life.

The age of the earth is about 4.6 billion years old, that is, the life of the earth appears soon. Studies believe that these early primitive lives are microorganisms that are invisible to the naked eye, and are born and survived in the deep sea. This is because when the earth was just formed, there was no oxygen in the atmosphere and no ozone layer. The strong ultraviolet rays in the sun directly radiated to the surface. Life could not survive on the land, and could only survive in a darker seawater.

The earliest life is the simplest single -cell germotic life, and it is an anaerobic life body. It does not need or even be afraid of oxygen, and it cannot make nutrients. It can only directly absorb the survival and reproduction of organic nutrients in the environment.

After hundreds of millions of years of adaptation to the sun, life has evolved out of photosynthetic pigment, and learned the use of sunlight for photosynthetic effects. Although it is still very simple single cells, it has changed from heterogeneity to self -care. It can transform the inorganic objects in the environment into the nutrients they need through photosynthesis, which is a big leap in life.

And these creatures that can use photosynthesis, metabolic excretion are oxygen. The outbreak of the cyanobacteria 2.5 billion years ago was considered to be the protagonist of the oxidation incident of the earth. A large amount of oxygen changed the atmospheric component and caused a large number of anaerobic creatures. Later, some of the oxygen creatures that adapt to new atmospheric ingredients to develop and develop, and most of the creatures need oxygen to survive.

With the changes in the earth's environment, organisms have evolved from prokaryotic cells and single cells to authentic cells and multi -cell, and gradually developed from aquatic to land, from invisible microorganisms to visible plants and animals. These changes are not just changes in biological shapes and some functions, but from the deepest genetic mutations, a generation of long -term gene mutation.

Starting from the Cambrian 540 million years ago, the outbreak of life's diverse visible forms, so from then on, the Earth evolution has entered the Xianshengshu from the ancient universe, which shows the existence of life. During these 54 million years, life has gone through five major extinction, and now it has entered the sixth major extinction. Each of the extinction species has disappeared by more than 80-95%.

There are about 8.7 million creatures on the earth, including microorganisms, plants and animals. There are about 6.5 million species of terrestrial creatures, and about 2.2 million kinds of aquatic creatures. Since the emergence of life, at least 120 million kinds of creatures have existed on the earth. Many creatures have become extinct because they cannot adapt to the environment, and then bred new creatures that are more adaptable to the environment.

Now all species, including high -level to human, low -level to moss and fungi, have evolved from the oldest and most primitive cells, and have changed from generation to generation of genetic mutation to today.

The genetic transformation in natural evolution is to adapt to the natural selection process. Only slight changes each time, through continuous, gradual, beneficial, and long -term countless mutations and mutations before they come to the present. In contrast, genetic engineering is human -oriented, and changes between generations.

But whether it is a slow and gradual change or artificial mutation, it belongs to the category of "genetically modified". And unless all the animals and plants are extinct, natural genetically modified genes are always on the road, there is no end point. Modern genetic engineering has insight into the laws of nature and uses the laws of nature

Just like natural evolution, human civilization is constantly evolving, from ancient obscurity to ancient farming culture, and has experienced machineization and electrification, and now entered the age of informationization and intelligence. Human beings have moved from ancient darkness to light, from the awe and passive obedience to nature, to understanding the laws of nature and using natural laws to actively transform nature. Science is leading humans to continue to move forward.

Among them, the understanding of genetic gene not only allows humans to understand their own origin and the past, but also greatly changed the future of human beings.

One of the greatest projects in the last century was the human genome plan and was recognized as the lunar landing plan of life science by the scientific community. This project was proposed by American scientists in 1985. It was officially launched in 1990. The United States, Britain, France, Germany, Japan, and Chinese scientists participated in this project. After 16 years of hard work, it cost 3 billion US dollars. At the end of 2006, it was completed in 2006. A chromosome sequencing.

Chinese scientists participated and completed the 1%sequence measurement work, and received high evaluation: China's biological industry has entered the international advanced ranks, sharing all the results, resources and technologies of the human genome plan, and for the Chinese biological industry in China in the 21st century biological industry belt Here comes the bright prospects.

Human beings understand their complete gene sequences, and they can overcome and change problems in genes. Through gene therapy and gene drugs, humans make humans healthier and live longer.

Gene engineering is also called genetically modified technology. The significance of this technology is to accelerate the change of biological hundreds of millions of years according to human wishes to serve some kind of needs. Scientists are now using this technology to benefit human society.

International transgenic technology has been widely used in pharmaceutical, industry, agriculture, environmental protection, energy and other fields. For example, insulin, restructuring vaccine, antibiotics, interferon, beer yeast, food enzymes, additives, additives, etc., which are currently widely used GM products.

In the field of agriculture, a large number of new varieties of crops with insecticides, disease resistance, herbicide, anti -inverse, and high -quality crops have also been cultivated in the world, such as soybeans, cotton, corn, rapeseed, potato, apples, and other dozens of varieties. Now, the proportion of major genetically modified crops in the world has 79%of cotton, 74%of soybeans, 31%of corn, and 27%of rapeseed.

The types of genetically modified products in my country are also continuously enriched. For example, the market share of domestic insect -resistant cotton cotton has increased to more than 99%; 3 herbasis soybeans and 4 insect -resistant herbicide corn obtain production and application safety certificates; Insects of insect -resistant rice, drought -resistant wheat, and anti -blue -ear diseased pigs have formed staircase reserves.

Some genetically modified foods with special effects can solve the problem of people's illness. For example, Swedish scientists implant part of the genes of daffodils into rice genes, so that the seeds of rice growing out of this seed have higher iron content, thereby solving the problem of anemia caused by a anemia caused by iron deficiency;

Through genetically modified technology, rice is rich in carotene and vitamin A, commonly known as "golden rice". The β-carotene content is 23 times that of ordinary rice. It can solve the problem of vision loss or even blindness caused by lack of vitamin A. There are 400 million in the world; it can also solve the problem of malnutrition caused by carotene deficiency.

Unfortunately, this study lost his work due to questioning and discussion in China, and was later planted in the Philippines and was approved to be listed.

There are hundreds of millions of hepatitis B virus carriers and more than 30 million hepatitis B patients in China. In order to prevent the spread of infectious diseases, the state has developed hepatitis B vaccine, but the vaccination is expensive for vaccination, and it takes many years to take over many years. trouble. As a result, the national "863" plan launched a project of "using genetically modified plants to produce hepatitis B vaccines", which is borne by the Chinese Academy of Agricultural Sciences and successfully cultivated the "hepatitis B vaccine tomato".

It is said that this genetically modified tomato has obtained the production safety certificate of the Ministry of Agriculture, which will soon be produced in mass production and put on supermarket shelves. As long as you eat this delicious tomato, you can prevent hepatitis B. Why not? Researcher Liu Dehu, a project leader, said in an interview with the media: As long as you eat this genetically modified tomato for a long time, hepatitis B virus antibodies can always be maintained at a higher level.

However, in the end, what happened to this tomato, I did not find the news of the exact listing, otherwise, I really want to buy some to taste it.

There are still many cases, such as genetically modified hormones that make cow milk are rich in genetically modified steely soybeans, etc.

These genetically modified products reduce the labor costs of agricultural and animal husbandry, reduce pesticide dosage and disaster losses, protect the ecological environment, enhance the quality and nutritional value, and some can solve human health and disease problems.

So, is genetically modified food safe?

In fact, this question has been answered in the previous narrative. Because all natural products are the result of genetically modified, not the same way. If everyone wants to eat the most primitive and most natural products, it is only 3.7 billion years ago.

Don't say that the oldest is the oldest, that is, 100,000 years ago, whether it is people, pigs, dogs, cattle, or rice, wheat, cabbage, and radish, it is not what they are now. It looks like. Human artificial changes are nothing more than people recognizing the mystery of genes, and more purposeful changes. Human intake of food is mainly absorbed by the gastrointestinal protein, fat, carbohydrates, dietary fiber, and sugar in the food. In all formal transgenic foods, no matter how their genes or growth processes change, the nutritional ingredients will not be Graduation will only be better. Therefore, the food obtained through genetically modified technology does not match the safety of consumption.

Many people in the society now have a wishes or opposition to genetically modified products. They are mainly provoked by some people, especially if they feel incredible about some pest -anti -genetic modified technology. Don't eat bugs, why can people eat? In fact, there are many things that bugs do not eat people in this world, and there are many bugs who like to eat people.

The reason why genetically modified crops can resist insect pests is because scientists have discovered that Suyun Cychen bacteria can kill insects, because there is a special "BT insect -resistant protein" in this bacteria. However, this protein is highly specific, which is only effective for specific insects, such as the combination of "specific receptors" on the intestinal tract such as moths and butterflies, which will cause intestinal perforation to die.

However, the gastrointestinal cells of humans, livestocks and other non -"squamous wings" insects do not combine the "specific receptor" of this protein. After entering the digestive tract, these insect -resistant proteins were digested and degraded as ordinary proteins. Just plant nutrition. These have been confirmed theoretically and countless experiments.

These crops implanted with insect -resistant genes, during the growth period, do not need to be used or rarely adopt pesticide pesticides due to less insect pests. Safe and healthier.

Whether it is natural growth food or human transgenic food, the country has inspection standards. The inspection items are nutrient elements and toxic and harmful control indicators contained in food itself. As long as they meet national food safety standards, they are safe foods. No matter what food, it is absorbed by the gastrointestinal tract is digested nutrients, not genes.

Someone was scared as soon as he heard the "gene", as if he had eaten any genes, it would be affected by this gene. If this logic, that person can eat anything, only eating people can maintain people's genes. In fact, we eat grain grains every day, eat pork, beef, lamb, chicken, duck meat, and chicken and duck eggs ~ chicken and duck eggs. These foods are the genes of these animals and plants. After thousands of years, no one has seen animals such as grains or pigs, sheep, chickens, chickens and ducks.

In such a simple truth, why do many people always make trouble? Therefore, I hope that friends will not follow the people who pretend to sleep and serve some "organic" interest groups behind them. They will understand with their own brains.

Of course, any science is a double -edged sword, and genetic engineering can benefit humans and destroy humans. Therefore, the safety of genetically modified food I mentioned before is that the genetically modified engineering must be carried out under national supervision. All listing genetically modified foods must be strictly inspected and safely identified by qualified institutions. Such foods can be eaten with confidence.

Not long ago, the scientists of Cambridge in the UK completed the decipline of the namura gene map and found that after long -term evolution, the plants itself contained almost all excellent genes, including disease -resistant and insect pests, high yield, delicious and high -quality genes. This type of namura has become the most widely used model plant in the world, and is known as "fruit flies in plants".

This indicates that only the excellent fragments in the plant itself need to be strengthened to make it express and excellent in the growth process to get the required results. In this way, plants that use genetically modified technology in the future may no longer be implanted from other species of genes, and the safety will be higher. Can such genetically modified foods cause people's concerns and opposition?

When I write such articles, some people often drink in the comment area: Are you good at the benefit of genetically modified platform? Do you eat yourself? I stated solemnly here: I have no communication with any genetic institutions and personnel, but I just speak with a popular science conscience and scientific common sense; I do n’t pay special attention to whether or non -genetically modified when I buy food. The only standard is cost -effective.

Of course, if there are certain special effects of genetically modified foods approved by the state, it is beneficial to my health, and I will definitely buy and eat. I have eaten many genetically modified foods, such as genetically modified edible oil and soybean products. I believe that everyone who reads my article, whether you take it or not, have eaten genetically modified foods, because now all pastries and restaurants may use genetically modified raw materials. Do you have the ability to refuse? So, are you uncomfortable or some changes now?

Therefore, when you look at the genetically modified, the scientific life is more happy. In this regard, what do you think, welcome to discuss, thank you for reading.

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